Accel

Accel, established in 1983, is a prominent venture capital firm headquartered in Palo Alto, California, with additional offices in San Francisco, London, and Bangalore. The firm specializes in investing in early and growth-stage technology startups, focusing on sectors such as software, cloud technologies, consumer services, enterprise, healthcare, fintech, and security. Accel's portfolio includes notable companies like Atlassian, Facebook, Slack, and Spotify, reflecting its ability to identify and support entrepreneurs building businesses that drive next-generation industries.

Casey Aylward

Partner

Mahendran Balachandran

Partner, India

Luca Bocchio

Partner

Andrei Brasoveanu

Partner

Katie Brown

Investor

Abhinav Chaturvedi

Partner

Ethan Choi

Partner

Miles Clements

Partner

Adrian Colyer

Venture Partner

Kevin Comolli

Partner

Ben Dooley

CFO

Peter Doyle

Investor

Christine Esserman

Partner

Sameer Gandhi

Partner

Sara Ittelson

Partner

Myrel Iturrey

Investor

Dinesh Katiyar

Partner

Richard Kotite

Vice President

Gagan Kumar

General Partner

Daniel Levine

Partner

John Locke

Partner

Zhenya Loginov

Partner

Steve Loughlin

Partner

Arun Mathew

Partner

Jonathan Mendelson

Investor

Subrata Mitra

Partner

Gonzalo Mocorrea

Investor

Vasant Natarajan

Partner

Vas Natarajan

Partner

Harry Nelis

Partner

Nate Niparko

Partner

Rachit Parekh

Investor

Vijaysai Patnaik

Associate

Varun Purandare

Principal and Investor

Ben Quazzo

Investor, Venture and Growth

Rafael Quintanilla Loeillet

Early-Stage Investor

Tim Rawlinson

Investor - Growth

Matthew Robinson

Investor

Sagar Sanghvi

Partner

Tracy Sedlock

Chief Operating Partner

Karan Shah

Investor

Manasi Shah

Vice President and Investment Team Member

Sarthak Singh

Investor

Robert Sternberg

Investor

Barath Shankar Subramanian

Senior Analyst

Charles Tananbaum

Investor

Humza Tariq

Investor

Jonathan Turner

Partner

Cecilia Wang

Vice President and Investor

Matt Weigand

Partner

Richard Wong

Partner

Ivan Zhou

Partner

Past deals in Open Source

Supabase

Series D in 2025
Supabase Pte. Ltd. is a company that provides an open-source alternative to Firebase, designed to enhance PostgreSQL databases with real-time and RESTful APIs without requiring extensive coding. Founded in 2020 and based in Singapore, Supabase offers a suite of tools to assist developers, including a Postgres database with self-documenting APIs, user authentication, instant APIs, Edge Functions, real-time subscriptions, and storage solutions. The platform enables users to manage database changes, perform queries with filtering and pagination, and handle user permissions through an intuitive interface. By focusing on simplifying database management and enhancing scalability, Supabase allows developers to concentrate on building their core products efficiently.

Graphite

Series B in 2025
Graphite is a code review platform designed to enhance the efficiency of software development teams. It facilitates the creation and review of smaller pull requests, allowing engineers to work without interruptions and deliver updates more rapidly. The platform includes an open-source command-line interface (CLI) and a user-friendly dashboard that simplifies the process of submitting and managing code changes. By incorporating features such as stacked changes and an intuitive command system, Graphite aims to streamline code reviews and improve deployment practices. Additionally, it offers tools for metrics management and analytics integration, helping teams to recover quickly from any deployment issues. Graphite was developed to fill the gap left by traditional internal code review tools, focusing on supporting fast-paced engineering teams in achieving their goals effectively.

Dash0

Seed Round in 2024
Dash0 is an observability platform tailored for developers, founded in 2023 and based in New York City. It offers a unique OpenTelemetry Native solution that emphasizes granular, resource-centric monitoring, enabling real-time visibility into applications and infrastructure. The platform simplifies the configuration of open telemetry collectors through an intuitive visual editor, making data management effortless. Dash0’s integration with open standards, such as Perses, PromQL, and Kubernetes, ensures a user-friendly experience. By consolidating logs, traces, and metrics in one place, Dash0 provides actionable insights that help users quickly identify issues and enhance performance. The platform's straightforward pricing model further supports accessibility and transparency for its users.

Filigran

Series B in 2024
Filigran is a European cyber technology company dedicated to providing high-quality open-source software tailored for cybersecurity and crisis management teams. The company has developed an extended threat management (XTM) portfolio that includes solutions for cyber threat intelligence, adversary simulation, and crisis response. This comprehensive approach allows organizations, both private and public, to enhance their cybersecurity measures while leveraging open-source platforms. Filigran's commitment to supporting global organizations positions it as a key player in the field of cybersecurity and crisis management.

Checkly

Series B in 2024
Checkly Inc. is a monitoring and testing platform designed for DevOps teams, focusing on the performance and status of API endpoints and essential website transactions. Founded in 2018 and based in Berlin, Germany, with an additional office in Boston, Massachusetts, Checkly offers a code-first solution that integrates seamlessly into development workflows. The platform features tools for monitoring critical transactions, such as logins and shopping carts, and includes capabilities for setting expiry alerts and taking screenshots for immediate insights. Checkly's emphasis on JavaScript-based open-source technology makes it accessible for modern, cross-functional teams looking to enhance their reliability and testing processes from a single dashboard.

Corelight

Series E in 2024
Corelight, Inc. provides network visibility solutions tailored for information security professionals, focusing on network traffic analysis to combat cyber threats. The company offers a suite of products, including Corelight sensors and a fleet manager, built upon the open-source Bro framework, which delivers actionable, real-time data to enhance cybersecurity efforts. Founded in 2013 and headquartered in San Francisco, California, Corelight serves enterprises, government agencies, and higher education institutions, enabling them to gain deep insights into network traffic and effectively detect and respond to cyberattacks. The company also maintains additional offices in Santa Clara, California, and Columbus, Ohio.

vlt

Pre Seed Round in 2024
VLT is a startup focused on enhancing open-source software management. It's developing a next-generation package manager and registry, aiming to improve security and efficiency in the open-source ecosystem. Currently, the company operates in stealth mode.

Filigran

Series A in 2024
Filigran is a European cyber technology company dedicated to providing high-quality open-source software tailored for cybersecurity and crisis management teams. The company has developed an extended threat management (XTM) portfolio that includes solutions for cyber threat intelligence, adversary simulation, and crisis response. This comprehensive approach allows organizations, both private and public, to enhance their cybersecurity measures while leveraging open-source platforms. Filigran's commitment to supporting global organizations positions it as a key player in the field of cybersecurity and crisis management.

Vocode

Seed Round in 2024
Vocode is a developer of voice AI interfaces that specializes in creating voice-based applications through composability. The company's open-source library facilitates the development of realistic, production-ready conversational voice interfaces by providing essential tools for speech recognition, natural language understanding, and speech synthesis in real time. This platform streamlines common workflows, enabling developers to efficiently build and deploy advanced voice applications tailored to diverse needs. Vocode aims to empower developers in harnessing the potential of voice technology for various applications.

Stacklok

Series A in 2023
Stacklok develops software supply chain security solutions that focus on enhancing the security of open-source software for enterprises. The company provides a platform that offers end-to-end visibility into the software supply chain, allowing organizations to better secure their applications and tools. By making the benefits of open-source technology more accessible, Stacklok aims to empower developers to create software that is not only innovative but also secure.

EdgeDB

Series A in 2022
EdgeDB is an innovative company focused on transforming the relational database landscape. Founded in 2019 and based in San Francisco, it offers an open-source object-relational database platform designed to address common challenges faced by developers and data engineers. By introducing a streamlined data model and a powerful query language, EdgeDB aims to enhance productivity and ease of use, making data management more efficient. The platform enables developers to construct complex queries, subqueries, and nested inserts with a composable syntax that simplifies the representation of selection sets and property assignments. This approach helps mitigate the impedance mismatch often encountered in traditional databases, allowing for the development of safer and more efficient software.

Appsmith

Series B in 2022
Appsmith is a developer of an open-source low-code application platform established in mid-2019. The platform enables developers to efficiently build, deploy, and manage custom internal applications, particularly focusing on CRUD functionalities. With over 5 million downloads and usage among more than 1,000 enterprises across over 100 countries, Appsmith aims to simplify the development of internal tools by streamlining operations, automating processes, and facilitating the integration of various applications and data. Additionally, the platform enhances legacy applications by allowing developers to incorporate new features, all while maintaining enterprise-grade security and governance.

Sentry

Series E in 2022
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

Smallstep

Series A in 2022
Smallstep provides an identity authority designed for development, security, and operations teams, enabling them to integrate security into their delivery pipelines. By making code identity-aware, Smallstep enhances the security of connected applications across various environments, including cloud, containers, and serverless systems. The company offers an open-source toolkit that translates security best practices into actionable tools, allowing developers and operators to effectively protect their infrastructure. Additionally, Smallstep's comprehensive suite of operational tools facilitates the construction and maintenance of zero trust systems, securely connecting users and services across any platform globally. This approach reduces reliance on traditional security measures such as virtual private networks and firewalls, thereby streamlining security processes.

EdgeDB

Seed Round in 2022
EdgeDB is an innovative company focused on transforming the relational database landscape. Founded in 2019 and based in San Francisco, it offers an open-source object-relational database platform designed to address common challenges faced by developers and data engineers. By introducing a streamlined data model and a powerful query language, EdgeDB aims to enhance productivity and ease of use, making data management more efficient. The platform enables developers to construct complex queries, subqueries, and nested inserts with a composable syntax that simplifies the representation of selection sets and property assignments. This approach helps mitigate the impedance mismatch often encountered in traditional databases, allowing for the development of safer and more efficient software.

Airbyte

Series B in 2021
Airbyte is an open-source data integration platform that facilitates the synchronization of data from various applications, APIs, and databases to data warehouses. The platform automates the creation of data pipelines through the use of pre-built or custom connectors, allowing businesses to efficiently collect and analyze data from a diverse range of sources. This capability is particularly beneficial for organizations seeking to obtain insights from users employing ad-blocking tools. With a focus on improving data accessibility and integration, Airbyte aims to streamline the data management process for businesses across various industries.

Appsmith

Series A in 2021
Appsmith is a developer of an open-source low-code application platform established in mid-2019. The platform enables developers to efficiently build, deploy, and manage custom internal applications, particularly focusing on CRUD functionalities. With over 5 million downloads and usage among more than 1,000 enterprises across over 100 countries, Appsmith aims to simplify the development of internal tools by streamlining operations, automating processes, and facilitating the integration of various applications and data. Additionally, the platform enhances legacy applications by allowing developers to incorporate new features, all while maintaining enterprise-grade security and governance.

Checkly

Series A in 2021
Checkly Inc. is a monitoring and testing platform designed for DevOps teams, focusing on the performance and status of API endpoints and essential website transactions. Founded in 2018 and based in Berlin, Germany, with an additional office in Boston, Massachusetts, Checkly offers a code-first solution that integrates seamlessly into development workflows. The platform features tools for monitoring critical transactions, such as logins and shopping carts, and includes capabilities for setting expiry alerts and taking screenshots for immediate insights. Checkly's emphasis on JavaScript-based open-source technology makes it accessible for modern, cross-functional teams looking to enhance their reliability and testing processes from a single dashboard.

Airbyte

Series A in 2021
Airbyte is an open-source data integration platform that facilitates the synchronization of data from various applications, APIs, and databases to data warehouses. The platform automates the creation of data pipelines through the use of pre-built or custom connectors, allowing businesses to efficiently collect and analyze data from a diverse range of sources. This capability is particularly beneficial for organizations seeking to obtain insights from users employing ad-blocking tools. With a focus on improving data accessibility and integration, Airbyte aims to streamline the data management process for businesses across various industries.

Salto

Series B in 2021
Salto Labs Inc. specializes in business application configuration, providing a comprehensive dashboard for companies to manage their applications and services. Founded in 2019 and based in Tel Aviv-Yafo, Israel, Salto offers a unique solution that employs an Open Source and an Enterprise SaaS product to facilitate multi-application configuration. At the core of its technology is NaCl (Not Another Configuration Language), which allows for the automatic extraction and declarative representation of configurations from various business applications, including Salesforce, NetSuite, and HubSpot. This innovative approach enables collaborative editing and deployment of configurations, with capabilities for testing, tracking, and rolling back changes as needed. Salto's structured language enhances usability by allowing text searches, re-use of configurations, inline documentation, and easy auditing of changes, ultimately streamlining business operations and reducing errors. The company is backed by notable investors and has expanded its presence with offices in both Tel Aviv and San Francisco.

Styra

Series B in 2021
Styra, Inc. is a technology company based in Redwood City, California, founded in 2015. It specializes in developing a cloud-native authorization platform that enables organizations to enforce and monitor authorization policies across their applications and infrastructure. The Styra platform utilizes an Open Policy Agent to provide a comprehensive solution for managing security and compliance risks. Its features include context-based admission control, policy design and validation, policy distribution, and monitoring and auditing capabilities. By implementing authorization policy-as-code, Styra allows businesses to pre-validate policy changes, thereby mitigating risks before deployment. The platform also supports a range of environments, including multi-cloud, microservices, containers, and databases, ensuring that security policies can be defined and enforced consistently across various namespaces and clusters.

Airbyte

Seed Round in 2021
Airbyte is an open-source data integration platform that facilitates the synchronization of data from various applications, APIs, and databases to data warehouses. The platform automates the creation of data pipelines through the use of pre-built or custom connectors, allowing businesses to efficiently collect and analyze data from a diverse range of sources. This capability is particularly beneficial for organizations seeking to obtain insights from users employing ad-blocking tools. With a focus on improving data accessibility and integration, Airbyte aims to streamline the data management process for businesses across various industries.

Sentry

Series D in 2021
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

Weaveworks

Venture Round in 2020
Weaveworks Limited is a software company founded in 2014, specializing in open-source solutions that enhance the management of containerized applications. Based in London with an additional office in San Francisco, Weaveworks offers a range of products designed to facilitate the operation of Kubernetes workloads. Its key offerings include Weave Net, a portable software-defined networking solution, and Weave Scope, which provides real-time visibility and interaction with distributed applications. Additionally, Weave Flux automates the deployment of microservices, while Weave Cloud serves as a Software-as-a-Service platform that helps DevOps teams connect, monitor, and deploy containers efficiently. The company is also recognized for its contributions to the Cloud Native Computing Foundation and various open-source projects, aiming to simplify the complexities of cloud-native application delivery for developers and operations teams.

Altinity

Seed Round in 2020
Altinity Ltd is a database consulting company based in Gillingham, United Kingdom, specializing in ClickHouse, an open-source column-store database management system designed for managing and analyzing large volumes of data. Established in 2017, Altinity provides both cloud and on-premise data analytics solutions, along with consulting, support, and training services to assist clients in designing and implementing data analytics using ClickHouse. The company caters to a diverse clientele, including startups and large corporations, leveraging ClickHouse for various big data analytics applications. Altinity's platform enables users to deploy and manage real-time analytic applications efficiently and affordably, allowing them to benefit from advanced data management capabilities without incurring significant licensing costs.

Checkly

Seed Round in 2020
Checkly Inc. is a monitoring and testing platform designed for DevOps teams, focusing on the performance and status of API endpoints and essential website transactions. Founded in 2018 and based in Berlin, Germany, with an additional office in Boston, Massachusetts, Checkly offers a code-first solution that integrates seamlessly into development workflows. The platform features tools for monitoring critical transactions, such as logins and shopping carts, and includes capabilities for setting expiry alerts and taking screenshots for immediate insights. Checkly's emphasis on JavaScript-based open-source technology makes it accessible for modern, cross-functional teams looking to enhance their reliability and testing processes from a single dashboard.

Styra

Series A in 2019
Styra, Inc. is a technology company based in Redwood City, California, founded in 2015. It specializes in developing a cloud-native authorization platform that enables organizations to enforce and monitor authorization policies across their applications and infrastructure. The Styra platform utilizes an Open Policy Agent to provide a comprehensive solution for managing security and compliance risks. Its features include context-based admission control, policy design and validation, policy distribution, and monitoring and auditing capabilities. By implementing authorization policy-as-code, Styra allows businesses to pre-validate policy changes, thereby mitigating risks before deployment. The platform also supports a range of environments, including multi-cloud, microservices, containers, and databases, ensuring that security policies can be defined and enforced consistently across various namespaces and clusters.

Corelight

Series C in 2019
Corelight, Inc. provides network visibility solutions tailored for information security professionals, focusing on network traffic analysis to combat cyber threats. The company offers a suite of products, including Corelight sensors and a fleet manager, built upon the open-source Bro framework, which delivers actionable, real-time data to enhance cybersecurity efforts. Founded in 2013 and headquartered in San Francisco, California, Corelight serves enterprises, government agencies, and higher education institutions, enabling them to gain deep insights into network traffic and effectively detect and respond to cyberattacks. The company also maintains additional offices in Santa Clara, California, and Columbus, Ohio.

Strapi

Seed Round in 2019
Strapi is an open-source software company based in Paris, founded in 2016. It specializes in providing a headless content management system (CMS) that enables developers to efficiently build, deploy, and manage application backends with minimal effort. By decoupling the frontend from the CMS, Strapi allows developers to utilize their preferred front-end tools and frameworks while offering a robust API for content delivery across various devices. The platform features a powerful dashboard and tools for API prototyping and management, streamlining the content distribution process for editors. This flexibility and user-friendly approach position Strapi as a valuable resource for developers seeking to create dynamic and scalable applications.

Sentry

Series C in 2019
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

Appsmith

Seed Round in 2019
Appsmith is a developer of an open-source low-code application platform established in mid-2019. The platform enables developers to efficiently build, deploy, and manage custom internal applications, particularly focusing on CRUD functionalities. With over 5 million downloads and usage among more than 1,000 enterprises across over 100 countries, Appsmith aims to simplify the development of internal tools by streamlining operations, automating processes, and facilitating the integration of various applications and data. Additionally, the platform enhances legacy applications by allowing developers to incorporate new features, all while maintaining enterprise-grade security and governance.

Sentry

Series B in 2018
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

Heptio

Series B in 2017
Heptio Inc. is a company based in Seattle, Washington, founded in 2016 by key contributors to the Kubernetes project. It specializes in making the Kubernetes open-source container management software accessible to enterprises, facilitating the automation of deployment, scaling, and management of containerized applications. Heptio aims to bridge the gap between traditional enterprise IT and modern cloud-native computing, providing tools and technologies designed for the contemporary business environment. By supporting and advancing the Kubernetes ecosystem, Heptio helps organizations leverage Docker containers effectively, enabling them to build robust cloud-native architectures. As of December 2018, Heptio operates as a subsidiary of VMware, Inc.

Corelight

Series A in 2017
Corelight, Inc. provides network visibility solutions tailored for information security professionals, focusing on network traffic analysis to combat cyber threats. The company offers a suite of products, including Corelight sensors and a fleet manager, built upon the open-source Bro framework, which delivers actionable, real-time data to enhance cybersecurity efforts. Founded in 2013 and headquartered in San Francisco, California, Corelight serves enterprises, government agencies, and higher education institutions, enabling them to gain deep insights into network traffic and effectively detect and respond to cyberattacks. The company also maintains additional offices in Santa Clara, California, and Columbus, Ohio.

Heptio

Series A in 2016
Heptio Inc. is a company based in Seattle, Washington, founded in 2016 by key contributors to the Kubernetes project. It specializes in making the Kubernetes open-source container management software accessible to enterprises, facilitating the automation of deployment, scaling, and management of containerized applications. Heptio aims to bridge the gap between traditional enterprise IT and modern cloud-native computing, providing tools and technologies designed for the contemporary business environment. By supporting and advancing the Kubernetes ecosystem, Heptio helps organizations leverage Docker containers effectively, enabling them to build robust cloud-native architectures. As of December 2018, Heptio operates as a subsidiary of VMware, Inc.

Smallstep

Seed Round in 2016
Smallstep provides an identity authority designed for development, security, and operations teams, enabling them to integrate security into their delivery pipelines. By making code identity-aware, Smallstep enhances the security of connected applications across various environments, including cloud, containers, and serverless systems. The company offers an open-source toolkit that translates security best practices into actionable tools, allowing developers and operators to effectively protect their infrastructure. Additionally, Smallstep's comprehensive suite of operational tools facilitates the construction and maintenance of zero trust systems, securely connecting users and services across any platform globally. This approach reduces reliance on traditional security measures such as virtual private networks and firewalls, thereby streamlining security processes.

Sentry

Series A in 2016
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

Weaveworks

Series B in 2016
Weaveworks Limited is a software company founded in 2014, specializing in open-source solutions that enhance the management of containerized applications. Based in London with an additional office in San Francisco, Weaveworks offers a range of products designed to facilitate the operation of Kubernetes workloads. Its key offerings include Weave Net, a portable software-defined networking solution, and Weave Scope, which provides real-time visibility and interaction with distributed applications. Additionally, Weave Flux automates the deployment of microservices, while Weave Cloud serves as a Software-as-a-Service platform that helps DevOps teams connect, monitor, and deploy containers efficiently. The company is also recognized for its contributions to the Cloud Native Computing Foundation and various open-source projects, aiming to simplify the complexities of cloud-native application delivery for developers and operations teams.

CoreOS

Series B in 2016
CoreOS, Inc. is a technology company that specializes in open source projects for Linux containers and Internet security software solutions. Founded in 2012 and based in San Francisco, with additional offices in New York City and a development hub in Berlin, CoreOS is recognized for its contributions to the Kubernetes community. The company offers Tectonic, an enterprise-ready platform that enhances Kubernetes with features for secure container orchestration, and Quay, a private image registry for building, storing, and distributing containers. CoreOS also provides CoreUpdate, a tool for managing application updates, and maintains various open source projects, including CoreOS Linux, etcd, and rkt. These solutions address key challenges related to downtime, security, and resilience, enabling organizations to run their applications reliably in diverse environments. In 2018, CoreOS became a subsidiary of Red Hat, further bolstering its position in the cloud infrastructure landscape.

Sentry

Seed Round in 2015
Sentry is an open-source platform focused on improving workflow productivity by monitoring application performance and error reporting. The company provides a tool that captures real-time data on errors and crashes within software applications, allowing users to prioritize and identify issues as they occur. This tool offers detailed insights into deployments and assists in reproducing and fixing crashes, enabling organizations to understand which errors are most detrimental to their operations. By highlighting the impact of these issues on business performance, Sentry helps its clients enhance their software reliability and ultimately improve their bottom line.

CoreOS

Series A in 2015
CoreOS, Inc. is a technology company that specializes in open source projects for Linux containers and Internet security software solutions. Founded in 2012 and based in San Francisco, with additional offices in New York City and a development hub in Berlin, CoreOS is recognized for its contributions to the Kubernetes community. The company offers Tectonic, an enterprise-ready platform that enhances Kubernetes with features for secure container orchestration, and Quay, a private image registry for building, storing, and distributing containers. CoreOS also provides CoreUpdate, a tool for managing application updates, and maintains various open source projects, including CoreOS Linux, etcd, and rkt. These solutions address key challenges related to downtime, security, and resilience, enabling organizations to run their applications reliably in diverse environments. In 2018, CoreOS became a subsidiary of Red Hat, further bolstering its position in the cloud infrastructure landscape.

Weaveworks

Series A in 2014
Weaveworks Limited is a software company founded in 2014, specializing in open-source solutions that enhance the management of containerized applications. Based in London with an additional office in San Francisco, Weaveworks offers a range of products designed to facilitate the operation of Kubernetes workloads. Its key offerings include Weave Net, a portable software-defined networking solution, and Weave Scope, which provides real-time visibility and interaction with distributed applications. Additionally, Weave Flux automates the deployment of microservices, while Weave Cloud serves as a Software-as-a-Service platform that helps DevOps teams connect, monitor, and deploy containers efficiently. The company is also recognized for its contributions to the Cloud Native Computing Foundation and various open-source projects, aiming to simplify the complexities of cloud-native application delivery for developers and operations teams.

Alfresco Software

Series D in 2014
Alfresco Software is an enterprise open-source software company based in San Mateo, California, established in 2005. It specializes in automating content-centric processes for digital businesses, offering a range of solutions including document management, web content management, and records management. By leveraging open-source technologies and contributions from the community, Alfresco develops high-quality software that is both cost-effective and efficient. Its platform facilitates seamless collaboration and connectivity, enabling organizations to digitize essential business processes and access information swiftly and easily.

Hortonworks

Series D in 2014
Hortonworks, Inc. is a provider of data management platforms and solutions that cater to a diverse range of industries, including financial services, healthcare, and telecommunications. The company specializes in the Hortonworks Data Platform (HDP), which is based on Apache Hadoop, allowing enterprises to store, manage, and analyze large datasets efficiently. In addition to HDP, Hortonworks offers Hortonworks DataFlow for real-time streaming analytics, Hortonworks DataPlane Service for data management across hybrid environments, and the Hortonworks Cybersecurity Platform for security analytics. The company also provides educational resources such as training, support services, and the Hortonworks Sandbox for testing and development. Founded in 2011 and headquartered in Santa Clara, California, Hortonworks operates globally and focuses on enabling organizations to harness the power of big data through its open-source solutions. As of early 2019, Hortonworks operates as a subsidiary of Cloudera, Inc.

Parastructure

Seed Round in 2013
Parastructure is a San Francisco-based company founded in 2012 by a team of Stanford University computer scientists. It specializes in developing data analysis and visualization software that empowers users to interpret and analyze data effectively. The company leverages advanced open-source infrastructure to create tools that enhance data analysis capabilities. Parastructure has received funding from Accel Partners and various prominent angel investors, positioning itself as a key player in the data analytics software market.

Kickfire Analytics

Series B in 2008
Kickfire makes an analytic appliance for the MySQL data warehouse market. With 11 million active installations, MySQL is the world's most popular open source database and its adoption is accelerating. As the amount of data stored in MySQL grows, so too does the requirement to analyze this data for business decision making. However, the technologies required for data warehousing and high-performance query and reporting within the leading proprietary databases such as Oracle and SQL Server don't exist in MySQL. Kickfire has the answer. By combining hardware and software innovations with the ease-of-use of the MySQL open source database, Kickfire brings to market an analytic appliance with unheard of performance, simplicity, and economics. At the core of every Kickfire appliance is a new SQL chip that radically alters the economics of query processing by packing the power of 10s of CPUs into a single chip. Just as NVIDIA moved graphics processing from software to hardware, Kickfire has done the same for database operations. This disruptive innovation facilitates tremendous improvements in speed and reductions in cost and power. With Kickfire, the MySQL data warehouse market now has a fully functional, load-and-go analytic appliance that rivals any of the proprietary database appliances or specialized analytic databases in the world. And there is no expensive hardware buildout or complex tuning required. Kickfire was founded in 2006 by Raj Cherabuddi and Joseph Chamdani, two proven entrepreneurs with more than 50 issued patents. Prior to Kickfire, they founded Sanera Systems, a startup that focused on mission-critical, high-performance SAN switches. Sanera was successfully acquired by McDATA, a public company with $800M in annual revenues, and is now part of Brocade. Backed by blue chip investors Accel Partners, Greylock Partners, Mayfield Fund and Pinnacle Ventures, Kickfire is headquartered in Santa Clara, California.

Alfresco Software

Series C in 2008
Alfresco Software is an enterprise open-source software company based in San Mateo, California, established in 2005. It specializes in automating content-centric processes for digital businesses, offering a range of solutions including document management, web content management, and records management. By leveraging open-source technologies and contributions from the community, Alfresco develops high-quality software that is both cost-effective and efficient. Its platform facilitates seamless collaboration and connectivity, enabling organizations to digitize essential business processes and access information swiftly and easily.

XenSource

Series C in 2006
XenSource, Inc. is a developer of enterprise-grade virtualization technology that focuses on simplifying server infrastructure. Founded in 2004 and headquartered in Palo Alto, California, the company is known for its open-source hypervisor virtualization technology, which includes Xen 3.0, a robust platform designed for enterprise server deployment. In addition, XenSource offers Xen Optimiser, a software management solution for multi-server virtualization infrastructure, and subscription-based support services for its products. By leveraging these technologies, XenSource enables organizations to enhance server utilization, consolidate resources, and improve data center efficiency, ultimately reducing overall costs associated with server management. In October 2007, XenSource was acquired by Citrix Systems, Inc.

Zimbra

Series C in 2006
Zimbra is a developer of open-source email and collaboration software, catering to service providers, enterprises, and government organizations. Founded in 2003 and headquartered in Frisco, Texas, with additional offices in San Mateo, London, Tokyo, Singapore, and Pune, Zimbra offers solutions designed to enhance communication and data management. Its flagship product, Zimbra Collaboration Server, addresses the challenges posed by outdated communication infrastructures, providing integrated email, calendar, and collaboration capabilities. Additionally, Zimbra Desktop allows users to consolidate information from various accounts, including Zimbra, Yahoo Mail, Gmail, and Hotmail. By focusing on secure and private data management, Zimbra helps organizations effectively organize and control their communications and information.

Alfresco Software

Series B in 2006
Alfresco Software is an enterprise open-source software company based in San Mateo, California, established in 2005. It specializes in automating content-centric processes for digital businesses, offering a range of solutions including document management, web content management, and records management. By leveraging open-source technologies and contributions from the community, Alfresco develops high-quality software that is both cost-effective and efficient. Its platform facilitates seamless collaboration and connectivity, enabling organizations to digitize essential business processes and access information swiftly and easily.

XenSource

Series B in 2005
XenSource, Inc. is a developer of enterprise-grade virtualization technology that focuses on simplifying server infrastructure. Founded in 2004 and headquartered in Palo Alto, California, the company is known for its open-source hypervisor virtualization technology, which includes Xen 3.0, a robust platform designed for enterprise server deployment. In addition, XenSource offers Xen Optimiser, a software management solution for multi-server virtualization infrastructure, and subscription-based support services for its products. By leveraging these technologies, XenSource enables organizations to enhance server utilization, consolidate resources, and improve data center efficiency, ultimately reducing overall costs associated with server management. In October 2007, XenSource was acquired by Citrix Systems, Inc.

Alfresco Software

Series A in 2005
Alfresco Software is an enterprise open-source software company based in San Mateo, California, established in 2005. It specializes in automating content-centric processes for digital businesses, offering a range of solutions including document management, web content management, and records management. By leveraging open-source technologies and contributions from the community, Alfresco develops high-quality software that is both cost-effective and efficient. Its platform facilitates seamless collaboration and connectivity, enabling organizations to digitize essential business processes and access information swiftly and easily.

JBoss

Series A in 2004
JBoss is an American company that focuses on developing and supporting open-source software. As a division of Red Hat, Inc., JBoss integrates the latest enterprise-ready features from its community projects into stable and supported middleware distributions designed for enterprise use. The company's product offerings encompass a variety of solutions, including an enterprise web platform, web server, service-oriented architecture (SOA) platform, data services, and a web framework kit, among others.

2nd Century

Venture Round in 2000
2nd Century Communications is a developer of business communication software designed to address the communication needs of small and medium-sized enterprises. The company operates as an open network application service provider, enabling these businesses to leverage advanced internet networking capabilities. Its software offers a unified communications and desktop computing environment, equipping organizations to enhance their operational efficiency and competitiveness in the modern marketplace.

Perplexity

Perplexity is an artificial intelligence-based search engine platform that combines large language models with traditional search engines. It leverages natural language processing and generative AI technologies to deliver conversational responses to user queries, aiming to enhance the search experience beyond standard results. The platform is designed to facilitate the development of safe and beneficial artificial general intelligence, offering an open-source environment accessible to the public. This allows clients to acquire skills and knowledge in software development, positioning Perplexity as a bridge between conventional search capabilities and advanced AI-driven assistance.
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