Index Ventures

Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Tessl is a technology company that specializes in AI-native software development. It offers an AI-powered platform that generates, maintains, and tests code, ensuring high-quality, secure, and self-maintaining software tailored to users' requirements. This platform is designed to be modular, scalable, and future-proof, allowing developers to create software that is compatible with emerging AI technologies.

Dazz specializes in unified remediation for cybersecurity teams and developers. Its platform swiftly identifies security blind spots, prioritizes issues, and facilitates fixes within a developer-friendly workflow, reducing risk windows significantly. This enables cybersecurity teams to adopt strategic approaches and allows developers to focus more on innovation.

Augment Code is a technology company that specializes in AI-driven coding assistance software. Their platform, designed to enhance the work of software developers, provides real-time suggestions for APIs and coding patterns, as well as custom AI models tailored to a company's codebase. This helps developers write code more efficiently, with fewer errors, and improves software quality and team productivity. The software is integrated into popular IDEs and Slack, making it easily accessible to users. Augment Code aims to augment, rather than replace, the work of software developers, with a mission to improve software development at scale using AI.

Superlinked is a developer of a real-time personalized search and recommendation platform aimed at enhancing information retrieval. The company specializes in transforming complex data into vector embeddings, which facilitates improved search functionalities and recommendations for users. Operating within the emerging vector operations segment of the broader machine learning operations market, Superlinked provides software developers with tools to build and enhance their products through advanced data processing techniques.

Dagster Labs is a developer of an open-source data orchestration platform called Dagster. This platform is designed to facilitate the development, production, and observation of data assets, enabling organizations to create productive and scalable data environments. By utilizing a Python library, Dagster allows users to build modern data applications that promote seamless collaboration in processing and producing trusted and reliable data. The platform is engineered to integrate easily with existing tools and infrastructure, enhancing the efficiency and effectiveness of data management for clients.

Otterize is a developer of an intent-based access control infrastructure platform that simplifies secure access for developers. The company focuses on managing existing access controls by utilizing a declarative approach to service-to-service authorization. Its platform enables the creation and application of client intent files, which automatically configure authorizations. This functionality allows DevOps and platform engineers to effectively manage access control, facilitating the automated and secure connection of services to one another and to the underlying infrastructure. By streamlining these processes, Otterize enhances transparency and security in access management for development teams.

Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Humanloop is a London-based company that designs and develops an artificial intelligence data labeling and model training platform to scale human-in-the-loop workflows for machine learning and natural language processing. The platform supports data labeling, model training and prompt management, enabling engineers and data scientists to move from idea to deployment with less labeled data while improving prompt development, evaluation and observability. It facilitates training AI models and managing prompts for large language model applications, helping organizations deploy AI capabilities more reliably and efficiently. The company serves clients across tech and consumer sectors, including teams at Gusto, Vanta and Duolingo that use Humanloop to ship reliable AI products.

ReadySet is a distributed SQL caching layer that precomputes the results of parameterized SQL queries and incrementally updates these results as the underlying data changes. It is wire-compatible with MySQL and Postgres, plugs directly into existing databases and applications without any code changes, and elastically scales read throughput to meet fluctuating demands. ReadySet offers the low latencies of a custom caching system and the high query throughputs of read replicas with the straightforward developer experience of using a single relational database.

Workbounce streamlines sales processes by aggregating resources, tools, and information into a single platform. It connects with popular tools like Google Drive, Slack, and Notion, enabling sales teams to quickly find answers needed to close deals.

Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Superconductive is the creator of Great Expectations, an open-source tool for data testing, documentation, and profiling. Great Expectations has a vibrant community where both core contributors and community members provide each other support through channels like Slack and Discuss. They offer paid consulting services to organizations that would benefit from closer collaboration with the core Great Expectations engineering team. It was created in 2017 and is headquartered in Redwood City, California.

Dazz specializes in unified remediation for cybersecurity teams and developers. Its platform swiftly identifies security blind spots, prioritizes issues, and facilitates fixes within a developer-friendly workflow, reducing risk windows significantly. This enables cybersecurity teams to adopt strategic approaches and allows developers to focus more on innovation.

Dagster Labs is a developer of an open-source data orchestration platform called Dagster. This platform is designed to facilitate the development, production, and observation of data assets, enabling organizations to create productive and scalable data environments. By utilizing a Python library, Dagster allows users to build modern data applications that promote seamless collaboration in processing and producing trusted and reliable data. The platform is engineered to integrate easily with existing tools and infrastructure, enhancing the efficiency and effectiveness of data management for clients.

Cord offers a collaboration toolkit that enables products to integrate live features such as chat, commenting, presence, notifications, and more. It provides customizable components, a rich SDK, and powerful APIs for multi-player functionality.

Superconductive is the creator of Great Expectations, an open-source tool for data testing, documentation, and profiling. Great Expectations has a vibrant community where both core contributors and community members provide each other support through channels like Slack and Discuss. They offer paid consulting services to organizations that would benefit from closer collaboration with the core Great Expectations engineering team. It was created in 2017 and is headquartered in Redwood City, California.

Feathery provides a low‑code platform that enables product teams to create and deploy data intake workflows, forms, and user journeys. It supports automatic deployment, SEO indexing, integration with popular frameworks and search engines, and is used by industries such as insurance, financial services, and healthcare to streamline data collection and improve control and speed.

Stack Overflow is a company that operates an online platform and community for developers to learn, ask, and share programming knowledge. It offers complementary products including Stack Overflow for Teams, a knowledge-management platform for mission-critical information; Stack Overflow for Talent and Jobs, a hiring and employer-branding solution for technology teams; Stack Overflow Advertising for product promotion; and Stack Overflow Enterprise, a private, centralized space for large teams to collaborate and access critical company information. The platform also supports private knowledge sharing and helps developers solve coding problems as well as discover job opportunities, contributing to both individual learning and organizational efficiency.

Gatsby, Inc. operates a platform that enables Fortune 500 companies to create websites and applications efficiently. Founded in 2015 and headquartered in Berkeley, California, the company specializes in a React-based static site generator (SSG) that revolutionizes web development by integrating best-practice techniques with dynamic data integration through a variety of plugins. This allows developers to leverage powerful features such as route-based code splitting, service workers, and offline support while maintaining user-friendly access for non-technical content creators. Gatsby's platform streamlines the development process, offering exceptional performance and simplifying deployment with one-click functionality. Its widespread adoption is evident, with tens of thousands of developers utilizing the platform, highlighting its significance in the modern web development landscape.

Evervault Ltd. is a company that specializes in developing privacy-preserving cloud infrastructure, founded in 2017 and headquartered in Dublin, Ireland. The company focuses on providing encryption infrastructure for developers, offering tools that allow them to deploy applications within hardware-secured environments. This approach ensures that user data remains encrypted at all times, simplifying the process of maintaining data privacy. Evervault's platform enables software developers to concentrate on product development without the added concern of security, making data protection both accessible and manageable.

Linear allows the user to manage software development and track bugs. Built for speed and efficiency. The founders started Linear from their own frustrations building software projects in successful high-growth companies like Airbnb, Coinbase and Uber. The founders wanted to create the tools that focus us and its team in making progress, not get in the way. Tools that are fast and efficient. Speed and performance were the main things Linear focuses on early on and keep focusing on that.

Duffel Technology Ltd., established in 2018 and headquartered in Sheffield, UK, operates an online platform that facilitates travel bookings. It specializes in flight booking solutions for businesses of all sizes, enabling them to offer flight search, booking, and management services to their customers. The platform provides real-time pricing and availability, ancillary services like baggage and lounge access, and tools for managing refunds and cancellations. Additionally, Duffel offers API integration and a ready-to-go agent booking tool to streamline the booking process.

Duffel Technology Ltd., established in 2018 and headquartered in Sheffield, UK, operates an online platform that facilitates travel bookings. It specializes in flight booking solutions for businesses of all sizes, enabling them to offer flight search, booking, and management services to their customers. The platform provides real-time pricing and availability, ancillary services like baggage and lounge access, and tools for managing refunds and cancellations. Additionally, Duffel offers API integration and a ready-to-go agent booking tool to streamline the booking process.

Duffel Technology Ltd., established in 2018 and headquartered in Sheffield, UK, operates an online platform that facilitates travel bookings. It specializes in flight booking solutions for businesses of all sizes, enabling them to offer flight search, booking, and management services to their customers. The platform provides real-time pricing and availability, ancillary services like baggage and lounge access, and tools for managing refunds and cancellations. Additionally, Duffel offers API integration and a ready-to-go agent booking tool to streamline the booking process.

EveryTeam is a company that offers an online platform designed to connect and organize shared content within teams. By prioritizing trust and accountability, EveryTeam aims to enhance collaboration similar to how GitHub serves engineering teams. The platform facilitates effective workflow management by enabling users to assign tasks, establish review schedules, and manage document revisions, ensuring that content remains reliable and up-to-date. This centralized repository allows teams to access important information easily, fostering a collaborative environment where actionable insights can be derived. EveryTeam's focus on improving the organization of shared content seeks to empower teams to work more efficiently and cohesively.

Citymapper Limited, established in 2010 and headquartered in London, offers a mobile and web-based transit application serving New York City, London, Paris, and Berlin. Its primary product, Citymapper, provides real-time transit information and directions via iOS and Android apps, along with APIs for developers. The company also offers CMMapLauncher, a tool to launch Citymapper and other mapping applications. Citymapper's mission is to help urban dwellers navigate cities efficiently by leveraging open transport data and real-time information, including weather alerts and disruptions.

SourceClear, Inc. is a software security company that focuses on providing tools to help developers build secure and reliable applications. Founded in 2012 and headquartered in San Francisco, with an additional office in Singapore, SourceClear utilizes data science and machine learning to enhance software composition analysis for DevSecOps. Its platform enables security teams to identify vulnerabilities within open-source code, thereby allowing organizations to manage their security policies effectively. SourceClear offers an online portal for analyzing security issues, a comprehensive registry of open-source libraries with curated vulnerability information, and scanning agents that integrate into various development workflows. This integration provides developers with real-time insights into which libraries require updates and highlights any associated risks, streamlining the continuous delivery process. The company's clientele includes notable brands such as Uber, Atlassian, and LinkedIn, reflecting its strong presence in the technology, gaming, social media, retail, finance, and defense sectors. As of 2018, SourceClear operates as a subsidiary of Veracode, Inc.

Gitter is an open-source chat and networking platform based in London, United Kingdom, designed to facilitate the management, growth, and connection of communities through messaging and content discovery. The platform offers instant messaging services that streamline community collaboration, making it easy for users to create, organize, and expand their communities with simple invitations. Gitter integrates with various tools such as GitHub, Trello, and Jenkins, enhancing its functionality and usability for developers. Its core mission is to connect developers, fostering meaningful relationships among users and the technologies they utilize.

Stack Overflow is a company that operates an online platform and community for developers to learn, ask, and share programming knowledge. It offers complementary products including Stack Overflow for Teams, a knowledge-management platform for mission-critical information; Stack Overflow for Talent and Jobs, a hiring and employer-branding solution for technology teams; Stack Overflow Advertising for product promotion; and Stack Overflow Enterprise, a private, centralized space for large teams to collaborate and access critical company information. The platform also supports private knowledge sharing and helps developers solve coding problems as well as discover job opportunities, contributing to both individual learning and organizational efficiency.

Citymapper Limited, established in 2010 and headquartered in London, offers a mobile and web-based transit application serving New York City, London, Paris, and Berlin. Its primary product, Citymapper, provides real-time transit information and directions via iOS and Android apps, along with APIs for developers. The company also offers CMMapLauncher, a tool to launch Citymapper and other mapping applications. Citymapper's mission is to help urban dwellers navigate cities efficiently by leveraging open transport data and real-time information, including weather alerts and disruptions.

Koality is a provider of a continuous integration platform designed to enhance software development processes. The platform focuses on parallelizing test suites, which helps in preventing broken builds and ensuring that tests run efficiently. By automatically distributing test tasks across available virtual machines, Koality effectively manages parallelization and reduces non-deterministic test results. This functionality offers engineering organizations robust, off-the-shelf testing capabilities, streamlining the development workflow while working securely behind firewalls.

Algolia is a search‑as‑a‑service platform that enables companies to deliver fast, relevant digital experiences across web, mobile, and voice. Its API and tools allow developers and business teams to build and optimize search and discovery experiences that increase engagement, conversion rates, and revenue.

Opsmatic, Inc. is a technology company based in San Francisco, California, that specializes in providing tools for operations professionals. The company's solutions are designed to enhance productivity and efficiency within operations teams, allowing them to play strategic roles in their organizations. Opsmatic's technology focuses on proactively improving performance, managing deployments, and reducing downtime, thereby enabling operations teams to deliver more consistent results with fewer surprises. As of October 2015, Opsmatic operates as a subsidiary of New Relic, Inc.

Stack Overflow is a company that operates an online platform and community for developers to learn, ask, and share programming knowledge. It offers complementary products including Stack Overflow for Teams, a knowledge-management platform for mission-critical information; Stack Overflow for Talent and Jobs, a hiring and employer-branding solution for technology teams; Stack Overflow Advertising for product promotion; and Stack Overflow Enterprise, a private, centralized space for large teams to collaborate and access critical company information. The platform also supports private knowledge sharing and helps developers solve coding problems as well as discover job opportunities, contributing to both individual learning and organizational efficiency.

FREEjit, Inc., established in 2010 and headquartered in Newport Beach, California, operates a unique online platform designed to leverage autocomplete technology for commercial purposes. The company aims to transform the familiar autocomplete feature found in search engines and browsers into a valuable service that can be marketed to various industries.

Zend Technologies Ltd. specializes in solutions for developing, deploying, and managing business-critical PHP applications, which are instrumental in powering a significant portion of the world's websites. Founded in 1999 and headquartered in Cupertino, California, Zend offers a range of products including Z-Ray, Zend Server, Zend Studio, Zend Guard, and Apigility, catering to the entire lifecycle of PHP applications. These tools assist developers by providing debugging, automation, and security features, enabling them to create high-quality applications efficiently. Zend’s solutions are utilized by over 35,000 companies globally, from small businesses to large enterprises, and are available through both direct sales and partnerships. The company has established strategic alliances with major technology firms including Amazon Web Services, IBM, and Microsoft, enhancing its service offerings. With additional offices in Europe and Israel, Zend continues to play a pivotal role in the PHP development landscape.

Dimdim is a developer of web conferencing solutions that offers a browser-based service built on an open-source platform. This allows users to download and install the open-source code on their own servers, ensuring flexibility and control over their conferencing needs. Attendees can participate in meetings without the requirement to download additional software. Dimdim's platform enables presenters to share their desktops, display slides, and engage in audio and video communication, along with chat features. The company provides a range of products, including Dimdim Pro and Dimdim Enterprise, which facilitate content sharing and management, web collaboration, and broadcasting capabilities.

Worklight is a developer of advanced mobile application platforms and tools designed for smartphones and tablets. The company specializes in creating HTML5, hybrid, and native applications, utilizing industry-standard technologies to enhance the development process. Worklight offers a flexible mobile integrated development environment (IDE), next-generation mobile middleware, and comprehensive end-to-end security. Additionally, the company provides integrated management and analytics solutions that enable organizations to efficiently develop and deliver applications. By streamlining the development process, Worklight significantly reduces time to market, costs, and complexity while improving user experiences for both customers and employees across various devices.

Dimdim is a developer of web conferencing solutions that offers a browser-based service built on an open-source platform. This allows users to download and install the open-source code on their own servers, ensuring flexibility and control over their conferencing needs. Attendees can participate in meetings without the requirement to download additional software. Dimdim's platform enables presenters to share their desktops, display slides, and engage in audio and video communication, along with chat features. The company provides a range of products, including Dimdim Pro and Dimdim Enterprise, which facilitate content sharing and management, web collaboration, and broadcasting capabilities.

Worklight is a developer of advanced mobile application platforms and tools designed for smartphones and tablets. The company specializes in creating HTML5, hybrid, and native applications, utilizing industry-standard technologies to enhance the development process. Worklight offers a flexible mobile integrated development environment (IDE), next-generation mobile middleware, and comprehensive end-to-end security. Additionally, the company provides integrated management and analytics solutions that enable organizations to efficiently develop and deliver applications. By streamlining the development process, Worklight significantly reduces time to market, costs, and complexity while improving user experiences for both customers and employees across various devices.

Zend Technologies Ltd. specializes in solutions for developing, deploying, and managing business-critical PHP applications, which are instrumental in powering a significant portion of the world's websites. Founded in 1999 and headquartered in Cupertino, California, Zend offers a range of products including Z-Ray, Zend Server, Zend Studio, Zend Guard, and Apigility, catering to the entire lifecycle of PHP applications. These tools assist developers by providing debugging, automation, and security features, enabling them to create high-quality applications efficiently. Zend’s solutions are utilized by over 35,000 companies globally, from small businesses to large enterprises, and are available through both direct sales and partnerships. The company has established strategic alliances with major technology firms including Amazon Web Services, IBM, and Microsoft, enhancing its service offerings. With additional offices in Europe and Israel, Zend continues to play a pivotal role in the PHP development landscape.

Qt Group Oyj is a software company headquartered in Espoo, Finland, that specializes in developing, productizing, and licensing software development tools under both commercial and open-source licenses. The company offers a robust framework of libraries and tools, known as Qt, which enables developers to create applications and user interfaces for desktop, embedded, and mobile platforms. Qt is widely utilized in various sectors, including consumer electronics, automotive, industrial automation, and healthcare, serving clients across over 70 industries globally. In addition to its development framework, Qt Group provides professional services such as consulting, training, and technical support, helping customers optimize their software solutions. With a presence in multiple countries, including Germany, the United States, Japan, and China, the company supports a large community of developers worldwide, enhancing the versatility and reach of its technology.

Zend Technologies Ltd. specializes in solutions for developing, deploying, and managing business-critical PHP applications, which are instrumental in powering a significant portion of the world's websites. Founded in 1999 and headquartered in Cupertino, California, Zend offers a range of products including Z-Ray, Zend Server, Zend Studio, Zend Guard, and Apigility, catering to the entire lifecycle of PHP applications. These tools assist developers by providing debugging, automation, and security features, enabling them to create high-quality applications efficiently. Zend’s solutions are utilized by over 35,000 companies globally, from small businesses to large enterprises, and are available through both direct sales and partnerships. The company has established strategic alliances with major technology firms including Amazon Web Services, IBM, and Microsoft, enhancing its service offerings. With additional offices in Europe and Israel, Zend continues to play a pivotal role in the PHP development landscape.