Heavybit

Kosli provides a cloud‑based change‑management platform that automates compliance across software development and operations pipelines. By recording immutable audit trails for every change, it reduces lead time for releases, streamlines operations, and strengthens threat mitigation. The solution delivers speed, security, and audit‑ready proof at scale, helping enterprises maintain governance while accelerating delivery.

LocalStack is the leading cloud development platform for building cloud and serverless apps offline.

Userfront is a company that specializes in creating an authentication and authorization platform aimed at enhancing security infrastructure for online applications. The platform focuses on providing secure, standards-based authentication solutions that prioritize ease of setup, testing, and administration. With a comprehensive dashboard for managing users and authorization, Userfront enables clients to seamlessly integrate modern authentication and access control measures, ensuring the protection of their digital environments. The company's tools connect users to applications and AI tools while maintaining compliance with contemporary security standards.

A technology company specializing in AI-powered software development tools. It is renowned for its open-source AI code assistant, designed to accelerate coding processes by offering customizable, learning-based solutions.

Kosli provides a cloud‑based change‑management platform that automates compliance across software development and operations pipelines. By recording immutable audit trails for every change, it reduces lead time for releases, streamlines operations, and strengthens threat mitigation. The solution delivers speed, security, and audit‑ready proof at scale, helping enterprises maintain governance while accelerating delivery.

Jeli, Inc. is a San Francisco-based company founded in 2019 that specializes in incident analysis through its innovative platform. This platform automatically aggregates data from various sources, including emails, Slack channels, PagerDuty, Zoom recordings, and logs, providing engineers with valuable insights to better understand and address incidents. Jeli's approach transcends the traditional focus on technical errors by also considering critical aspects such as team coordination and human factors, which are often neglected in incident analysis. By integrating seamlessly with existing tools, Jeli aims to enhance collaboration and communication between engineering and business units, ultimately delivering more proactive solutions to identify and resolve problems.

Apollo GraphQL provides an open-source GraphQL platform and commercial technologies that help teams build, test, and ship APIs across applications. The platform reduces boilerplate code, accelerates delivery by enabling frontend and mobile features to stay in sync with backend services, and supports scalable API development. Its Apollo GraphOS suite includes a self-service supergraph that links multiple backend services into a unified, scalable API, facilitating faster experimentation and deployment. The company serves major brands such as Netflix, Snap, and The New York Times, handling more than five trillion requests in 2023 and enabling personalized, omnichannel experiences. Based in San Francisco, Apollo GraphQL is used by developers to streamline API workflows across organizations.

LaunchDarkly is a software company that provides a feature management platform designed to enhance collaboration between development teams and business stakeholders. Its core product enables DevOps teams to safely deploy new features incrementally, targeting specific user segments across various platforms. This controlled rollout process facilitates standardized releases at scale, accelerates cloud migration, and improves overall software delivery efficiency.

Replicated, Inc. is a company that specializes in providing tools for the deployment and management of third-party applications within enterprise environments. Founded in 2014 and headquartered in Culver City, California, Replicated offers a solution for organizations seeking to install and operate Software as a Service (SaaS) applications securely within their own firewalls. By enabling software vendors to deliver cloud-native applications in on-premises data centers or private clouds, Replicated enhances security and control for its clients. The company's offerings facilitate the management and support of these applications, ultimately simplifying the customer support process for businesses.

Sanity develops a collaboration platform for software developers. Its core product is a content management system that enables real-time collaboration, live multi-user editing, and change tracking. Sanity's platform supports GraphQL and JavaScript APIs, allowing teams to build hosted content infrastructure for various applications such as e-commerce sites, mobile apps, and marketing platforms. Founded in Norway, the company operates offices in Oslo and San Francisco.

Blockdaemon facilitates blockchain deployment by offering a node management platform that supports over 30 protocols. It empowers businesses and developers to quickly launch and manage blockchain applications, with tools for exchanges, custodians, and financial institutions.

LocalStack is the leading cloud development platform for building cloud and serverless apps offline.

Jeli, Inc. is a San Francisco-based company founded in 2019 that specializes in incident analysis through its innovative platform. This platform automatically aggregates data from various sources, including emails, Slack channels, PagerDuty, Zoom recordings, and logs, providing engineers with valuable insights to better understand and address incidents. Jeli's approach transcends the traditional focus on technical errors by also considering critical aspects such as team coordination and human factors, which are often neglected in incident analysis. By integrating seamlessly with existing tools, Jeli aims to enhance collaboration and communication between engineering and business units, ultimately delivering more proactive solutions to identify and resolve problems.

Replicated, Inc. is a company that specializes in providing tools for the deployment and management of third-party applications within enterprise environments. Founded in 2014 and headquartered in Culver City, California, Replicated offers a solution for organizations seeking to install and operate Software as a Service (SaaS) applications securely within their own firewalls. By enabling software vendors to deliver cloud-native applications in on-premises data centers or private clouds, Replicated enhances security and control for its clients. The company's offerings facilitate the management and support of these applications, ultimately simplifying the customer support process for businesses.

Sanity develops a collaboration platform for software developers. Its core product is a content management system that enables real-time collaboration, live multi-user editing, and change tracking. Sanity's platform supports GraphQL and JavaScript APIs, allowing teams to build hosted content infrastructure for various applications such as e-commerce sites, mobile apps, and marketing platforms. Founded in Norway, the company operates offices in Oslo and San Francisco.

Shipyard is an orchestration platform for the modern data stack.

Avo develops software aimed at enhancing the accuracy of product analytics by preventing human errors during implementation. The company's platform provides tools for defining event-based analytics and generating customized tracking libraries. These tools serve as a validation mechanism for developers, ensuring that analytics are correctly implemented according to design specifications. By functioning like a spell-checker for data quality and a type-checker for developers, Avo enables users to confidently track and analyze data while minimizing the risk of mistakes in their analytics processes.

Blockdaemon facilitates blockchain deployment by offering a node management platform that supports over 30 protocols. It empowers businesses and developers to quickly launch and manage blockchain applications, with tools for exchanges, custodians, and financial institutions.

Sanity develops a collaboration platform for software developers. Its core product is a content management system that enables real-time collaboration, live multi-user editing, and change tracking. Sanity's platform supports GraphQL and JavaScript APIs, allowing teams to build hosted content infrastructure for various applications such as e-commerce sites, mobile apps, and marketing platforms. Founded in Norway, the company operates offices in Oslo and San Francisco.

CircleCI provides a continuous integration and delivery platform that automates build, test, and deploy processes to help software teams release code rapidly and with confidence. The platform supports version control integration, automated testing frameworks, and containerization, enabling developers to scale workflows, detect and fix defects early, and reduce deployment risk. Notable customers include Facebook, Spotify, Kickstarter, and Shyp, reflecting wide adoption across tech companies. Founded in 2011 and headquartered in San Francisco with a global remote workforce, CircleCI is backed by venture firms Scale Venture Partners, DFJ, Baseline Ventures, and Harrison Metal Capital.

Testim is a developer of a testing automation platform that simplifies the process of application testing within agile development cycles. The platform leverages machine learning to facilitate the authoring, execution, and maintenance of automated tests. By analyzing various attributes in real time, it allows developers to identify and manage test elements effectively. This approach reduces the need for continuous test maintenance following code changes, empowering developers to take ownership of code quality and making quality assurance an organization-wide initiative. With Testim, both developers and testers can enhance their automation skills, leading to improved efficiency in the testing process.

Avo develops software aimed at enhancing the accuracy of product analytics by preventing human errors during implementation. The company's platform provides tools for defining event-based analytics and generating customized tracking libraries. These tools serve as a validation mechanism for developers, ensuring that analytics are correctly implemented according to design specifications. By functioning like a spell-checker for data quality and a type-checker for developers, Avo enables users to confidently track and analyze data while minimizing the risk of mistakes in their analytics processes.

Moesif Inc. is a San Francisco-based company that offers a debugging and error analysis platform specifically designed for API traffic. Founded in 2016, Moesif's hosted service enables users to log and analyze various API requests, providing deep visibility into API traffic through error analytics and monitoring. The platform allows users to drill down into the details of each API call, including headers and body, to identify patterns and troubleshoot issues effectively. Catering to product-led teams across diverse sectors such as finance, healthtech, logistics, and enterprise software, Moesif supports both fast-growing startups and large enterprises. By delivering insights into API usage, Moesif empowers businesses to enhance their developer experiences and automate debugging processes.

Pusher Ltd. is a company that offers a hosted API service designed to integrate real-time bi-directional functionality into web and mobile applications, as well as other Internet-connected devices. Founded in 2011 and based in London, United Kingdom, Pusher provides a suite of libraries, including a JavaScript client library suitable for web and HTML5 applications. Its platform facilitates developers in creating features such as in-app notifications, activity streams, real-time dashboards, and live trackers. Additionally, Pusher includes tools for debugging applications and offers authentication mechanisms for private channels, along with presence functionality to monitor online users. As of December 2020, Pusher operates as a subsidiary of MessageBird B.V.

Blockdaemon facilitates blockchain deployment by offering a node management platform that supports over 30 protocols. It empowers businesses and developers to quickly launch and manage blockchain applications, with tools for exchanges, custodians, and financial institutions.

CircleCI provides a continuous integration and delivery platform that automates build, test, and deploy processes to help software teams release code rapidly and with confidence. The platform supports version control integration, automated testing frameworks, and containerization, enabling developers to scale workflows, detect and fix defects early, and reduce deployment risk. Notable customers include Facebook, Spotify, Kickstarter, and Shyp, reflecting wide adoption across tech companies. Founded in 2011 and headquartered in San Francisco with a global remote workforce, CircleCI is backed by venture firms Scale Venture Partners, DFJ, Baseline Ventures, and Harrison Metal Capital.

Testim is a developer of a testing automation platform that simplifies the process of application testing within agile development cycles. The platform leverages machine learning to facilitate the authoring, execution, and maintenance of automated tests. By analyzing various attributes in real time, it allows developers to identify and manage test elements effectively. This approach reduces the need for continuous test maintenance following code changes, empowering developers to take ownership of code quality and making quality assurance an organization-wide initiative. With Testim, both developers and testers can enhance their automation skills, leading to improved efficiency in the testing process.

Timekit Inc. is a software company that specializes in providing a platform for online booking experiences tailored for designers and developers. Established in 2015 and based in San Francisco, California, Timekit offers a suite of tools, including a synchronization engine, real-time availability engine, and booking engine, to facilitate scheduling and booking operations. Its platform aids in managing various activities such as customer meetings, service appointments, in-store visits, interview scheduling, office hours, and room bookings. By offering unified APIs, Timekit enables developers to seamlessly integrate robust booking functionalities into marketplaces, mobile applications, online stores, and subscription services. The company serves a diverse clientele across the United States and internationally, and it operates as a subsidiary of Tulip Retail, Inc. since late 2020.

Testim is a developer of a testing automation platform that simplifies the process of application testing within agile development cycles. The platform leverages machine learning to facilitate the authoring, execution, and maintenance of automated tests. By analyzing various attributes in real time, it allows developers to identify and manage test elements effectively. This approach reduces the need for continuous test maintenance following code changes, empowering developers to take ownership of code quality and making quality assurance an organization-wide initiative. With Testim, both developers and testers can enhance their automation skills, leading to improved efficiency in the testing process.

ReadMe provides a documentation management platform that enables companies to create developer portals with tutorials, guides, and API exploration. It helps teams quickly generate documentation, keep it up to date, and cultivate active developer communities, leveraging community-oriented features to drive adoption and improve developer support.

NodeSource, Inc. is a technology company that specializes in developing enterprise-grade tools and software for server-side JavaScript, particularly for Node.js applications. Founded in 2014 and based in Anaheim, California, NodeSource offers a suite of products designed to enhance developer productivity and ensure application security and performance. Key offerings include N|Ship, which facilitates intelligent orchestration across development and operations; N|Solid, an enterprise-grade platform that enhances application performance and protects critical applications; and N|Support, which aids organizations in establishing robust Node.js development and operations. Additionally, NodeSource Certified Modules provide security and trust for third-party JavaScript components. The company serves a diverse clientele, including Fortune 500 companies across various sectors, real-time service providers, and government entities, helping them to create reliable and performant applications and microservices.

Serverless, Inc. is a technology company headquartered in San Francisco, California, that specializes in providing a development framework for creating serverless architectures. Founded in 2015 by Austen Collins, Serverless offers the Serverless Framework, which allows users to build auto-scaling, pay-per-execution, and event-driven applications specifically on AWS Lambda. The company also provides an application structure to effectively manage code, resources, and events across various projects and teams. In addition to its core offerings, Serverless includes tools that facilitate easy development and deployment, along with features such as troubleshooting, alerts, and safeguards for developers creating web, mobile, and Internet of Things (IoT) applications. Serverless has established a strategic partnership with Tencent Cloud Computing to enhance its service offerings.

Netlify, Inc. is a cloud-based platform that streamlines web development by automating the process of building and deploying web applications. Founded in 2014 and based in San Francisco, the company offers a comprehensive suite of services including the Netlify platform, which integrates repositories and automates builds and deployments, as well as Netlify Build, a Git workflow for managing modern web projects. Additionally, Netlify provides tools like Netlify Edge, an application delivery network optimized for speed, and Netlify Dev, which allows users to run the platform locally on their laptops. By combining modern web frameworks, serverless functions, and edge computing, Netlify empowers developers and businesses to create high-performance, scalable websites efficiently. The platform is trusted by a range of notable brands, enhancing the way digital experiences are delivered across the web.

Mux specializes in online video infrastructure. Initially known for Mux Data, its performance analytics tool trusted by prominent companies, it later launched Mux Video, offering a simple API for video hosting, encoding, and streaming. Mux focuses on key viewer metrics like rebuffering, startup time, video quality, and errors to ensure optimal video experiences across devices.

LightStep Inc., established in 2013 and based in San Francisco, specializes in application performance management (APM) software solutions. The company's flagship product, LightStepPM, monitors and manages the performance of production systems at scale, providing real-time insights into end-to-end system behavior and interactions across organizational boundaries. It offers features such as SAML support, flexible data scrubbing, and is built on open standards. LightStep aims to deliver confidence in software application management by analyzing 100% of unsampled transaction data, accelerating root cause analysis for complex systems.

Convox, Inc. is a Platform as a Service (PaaS) provider founded in 2015 and based in Marietta, Georgia. The company offers an open-source application deployment platform that allows developers to build, deploy, and manage applications using Kubernetes within their own Amazon Web Services accounts. Designed by former Heroku engineers and backed by Y Combinator, Convox supports all major cloud environments, including AWS, Google Cloud, Digital Ocean, and Azure. Its platform features automated workflows, role-based access control, and comprehensive visibility across clouds, enabling software organizations to simplify their infrastructure. Convox serves a diverse clientele, ranging from startups to multinational enterprises, providing a portable and adaptable solution that integrates seamlessly with various development frameworks and programming languages.

Opsee is a company that specializes in providing developers with a microservice monitoring platform aimed at optimizing cloud-based distributed systems. Founded in March 2015 by Cliff Moon, Stephen Boak, and Andy Gross, Opsee offers testing and monitoring services that deliver instant alerts for applications experiencing issues. Its platform includes tools that automatically discover, test, and monitor new services within cloud infrastructure, allowing developers to assess compliance with service level targets and gain insights into system performance. This functionality helps teams maintain the reliability and efficiency of their applications in complex cloud environments.

LaunchDarkly is a software company that provides a feature management platform designed to enhance collaboration between development teams and business stakeholders. Its core product enables DevOps teams to safely deploy new features incrementally, targeting specific user segments across various platforms. This controlled rollout process facilitates standardized releases at scale, accelerates cloud migration, and improves overall software delivery efficiency.

LaunchDarkly is a software company that provides a feature management platform designed to enhance collaboration between development teams and business stakeholders. Its core product enables DevOps teams to safely deploy new features incrementally, targeting specific user segments across various platforms. This controlled rollout process facilitates standardized releases at scale, accelerates cloud migration, and improves overall software delivery efficiency.

Gradle Inc. is a company that specializes in enhancing developer productivity through its innovative software solutions, notably Develocity, which was formerly known as Gradle Enterprise. The firm is also the creator of the widely used open-source Gradle Build Tool, which sees over 30 million downloads each month. Gradle is at the forefront of Developer Productivity Engineering (DPE), a practice adopted by prominent organizations such as Airbnb, LinkedIn, Microsoft, Nasdaq, and Netflix. These elite teams utilize Develocity’s advanced technologies and analytics to accelerate build and test performance, thereby improving the reliability of their developer toolchains and streamlining the troubleshooting of failures. By automating and unifying the build processes, Gradle enables enterprises to effectively build, deliver, and maintain complex applications, thereby enhancing their capability to ship software efficiently and cost-effectively.

OverOps, Inc. is a software company that specializes in online application monitoring and error analysis. Founded in 2011 and based in Tel Aviv, Israel, OverOps provides a cloud-based platform that enables developers to identify and resolve production errors in real-time. The platform analyzes backend applications built with Java or .NET, allowing developers to receive detailed insights into exceptions, log errors, and performance slowdowns as they occur. By delivering the complete source code and variable states associated with critical errors, OverOps helps developers understand when and why issues arise, facilitating swift resolutions and optimized software performance. The company was previously known as Takipi Ltd. before rebranding in August 2016.

Apiary Inc. is a software development company specializing in application programming interface (API) integration through its flagship product, API Flow. Founded in 2011 and based in San Francisco, California, with engineering operations in Prague, Apiary provides a comprehensive cloud-based platform that enables developers to design, test, and document APIs efficiently. The API Flow platform supports industry standards such as API Blueprint and OpenAPI, streamlining the API creation lifecycle and facilitating the development of cloud-based applications. Its features include a user-friendly dashboard, access control, role management, and customization options, all aimed at enhancing the developer experience and fostering strong relationships between API owners and users. As of early 2017, Apiary operates as a subsidiary of Oracle Corporation.

Light Table is an innovative interactive integrated development environment (IDE) that allows users to modify running programs in real time. This platform enables developers to embed various elements, including websites and games, directly into their code. With a focus on enhancing the coding experience, Light Table offers features like inline evaluation and customizable plugins, which facilitate efficient code writing and better understanding of program functionality. By providing immediate feedback, Light Table helps users answer questions about their code and gain deeper insights into how their programs operate.

Founded in 2010, Pantheon Systems provides a cloud-based platform for agile marketing teams and developers to build, launch, and manage WordPress and Drupal websites. Serving diverse industries such as media, technology, education, and government, the company enables efficient website development and management.

Codenvy is a provider of a cloud development platform that facilitates the coding, building, and testing of applications. The company offers a cloud-based development environment that transforms the traditional local desktop setup, which includes the editor, builder, and tester runtimes, by logically separating it from the physical environment and relocating it to the cloud. This innovative approach enables enterprises to access on-demand workspaces that promote collaboration and eliminate constraints typically associated with local development environments.

Runscope Inc. is a company focused on enhancing the application development lifecycle through its suite of API monitoring and testing tools. Established in 2013 and headquartered in San Francisco, California, Runscope offers solutions for developers to monitor and manage APIs used in mobile and web applications. Its platform enables businesses to monitor API traffic, debug issues, and conduct automated integration testing, thereby allowing organizations to anticipate potential API failures and ensure their APIs are operational, efficient, and accurate. As of September 2017, Runscope operates as a subsidiary of CA, Inc.

Iron.io, Inc. is a developer of cloud-based tools designed for building and managing distributed applications. Founded in 2010 and based in Las Vegas, California, the company offers a range of solutions including IronWorker for container-based workloads, IronMQ for messaging queuing, IronFunctions for open-source functions integration, and IronCache for caching data. Iron.io's event-driven computing platform facilitates the delivery and processing of millions of messages and tasks, enabling asynchronous workloads in public, private, or hybrid cloud environments. Its technology supports various computing patterns, such as event processing and microservices, allowing enterprises to effectively scale their Docker-based workloads while maintaining control over job processing and security across different deployment scenarios.

Sanity develops a collaboration platform for software developers. Its core product is a content management system that enables real-time collaboration, live multi-user editing, and change tracking. Sanity's platform supports GraphQL and JavaScript APIs, allowing teams to build hosted content infrastructure for various applications such as e-commerce sites, mobile apps, and marketing platforms. Founded in Norway, the company operates offices in Oslo and San Francisco.