Index Ventures

Plain develops customer service software tailored for modern companies. Its platform integrates with products via APIs, managing issues, chats, emails, and reporting while tracking customer problems without disrupting conversations.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

Bridge is developer of an application programming interface for money movement within the financial technology sector. The company provides APIs that enable developers to convert various forms of currency into stablecoins and to facilitate instant, global transactions with built-in compliance and programmability features.

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.

Weaviate is a company that offers an open-source AI-native database and hybrid SaaS platform to build search and recommendation systems. Its vector search engine supports semantic search and integrates with applications via plugins and a console that helps understand data. The platform merges vector and keyword search to enable end-to-end AI-native application development, supporting synchronous, asynchronous, and multi-step data interactions.

Atlar provides a modern treasury platform for finance teams to manage money by consolidating bank and ERP data to deliver real-time visibility into cash flow, automating payment workflows, and supporting multiple currencies and payment schemes, enabling finance teams to optimize cash allocation, improve liquidity planning, and strengthen financial decision-making; the company is headquartered in Stockholm.

Plain develops customer service software tailored for modern companies. Its platform integrates with products via APIs, managing issues, chats, emails, and reporting while tracking customer problems without disrupting conversations.

Codat Limited operates a platform facilitating integrations between financial and accounting software. Established in 2016, it serves businesses, banking, insurance, and e-commerce sectors, with offices in London and New York.

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.

Typeform is a no-code SaaS platform that provides tools designed to enhance user engagement and facilitate data collection through interactive online forms, quizzes, surveys, and asynchronous video solutions. Established in 2012 and headquartered in Barcelona, Spain, with an additional office in San Francisco, California, Typeform aims to transform digital interactions into meaningful human connections. The platform is built to deliver a conversational experience, combining the flow of real-life conversations with the efficiency of web forms, thus offering a more engaging user experience. With over 500 million digital interactions annually, Typeform integrates seamlessly with numerous essential business tools, such as HubSpot, Calendly, and Slack, and employs a globally-distributed workforce of more than 450 people.

Xata provides a serverless database platform that combines the capabilities of traditional databases with the user-friendly interface of a spreadsheet application. This service is designed to seamlessly integrate into users' development workflows, facilitating tasks such as data insertion, querying, aggregation, and searching across various development environments, including JavaScript and APIs. Xata's architecture ensures that data is automatically replicated in multiple global regions, which enhances performance by minimizing response times for end users.

Check is the leading payroll platform that pioneered the ability for companies to differentiate and open up new revenue streams by embedding payroll into their platforms. Historically, complex regulatory structures stagnated payroll innovation, making it harder for businesses to create their own payroll offerings. By building on Check’s best in class infrastructure, flexible API, and deep expertise, platforms can launch profitable payroll businesses much faster, and with little overhead or administrative burden. Since Check’s public launch in January 2021, leading vertical SaaS companies and large scale workforce management horizontal platforms have built successful payroll businesses on its infrastructure. Check’s partners collectively serve more than 250,000 businesses and over 4 million employees. Check is backed by Stripe, Thrive Capital, Index Ventures, and Bedrock.

Ascend is a modern payments solution specifically designed for the insurance industry, aimed at automating insurance payment processes from start to finish. The platform facilitates various functions, including online customer payments, premium financing, and the distribution of commissions and payables. By streamlining operations and reducing payment friction, Ascend enables digital distributors to enhance their sales capabilities and provide a seamless online checkout experience for customers. This comprehensive approach not only simplifies insurance transactions but also supports the growth of client businesses by eliminating labor-intensive processes.

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.

Xata provides a serverless database platform that combines the capabilities of traditional databases with the user-friendly interface of a spreadsheet application. This service is designed to seamlessly integrate into users' development workflows, facilitating tasks such as data insertion, querying, aggregation, and searching across various development environments, including JavaScript and APIs. Xata's architecture ensures that data is automatically replicated in multiple global regions, which enhances performance by minimizing response times for end users.

Codat Limited operates a platform facilitating integrations between financial and accounting software. Established in 2016, it serves businesses, banking, insurance, and e-commerce sectors, with offices in London and New York.

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.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

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.

Reap Technologies Ltd., established in 2018 and headquartered in Hong Kong, specializes in developing and providing software solutions and platforms for businesses. Its core offerings include cash flow management, instant credit access, and rebate earnings. Reap also facilitates SME loans using external capital, driven by data and technology. The company's platform enables businesses of all sizes to access and manage finances, with features such as a card issuing API for secure credit card programs and expense management software. Reap empowers businesses to control their finances and streamline operations, with a team of over 50 working across multiple countries.

KarmaCheck is a San Francisco-based software company that provides background screening and credential verification services for staffing and hiring. It offers both online and offline background checks, including criminal checks, employment and education verifications, motor vehicle records, reference checks, and drug testing, as well as lite checks. The company emphasizes an API-first platform with a mobile-friendly candidate experience, real-time status tracking, and AI-driven automation to accelerate screenings and reduce administrative burden. KarmaCheck integrates with applicant tracking systems and HRIS to streamline workflows and help ensure compliance across hiring processes.

Codat Limited operates a platform facilitating integrations between financial and accounting software. Established in 2016, it serves businesses, banking, insurance, and e-commerce sectors, with offices in London and New York.

Check is the leading payroll platform that pioneered the ability for companies to differentiate and open up new revenue streams by embedding payroll into their platforms. Historically, complex regulatory structures stagnated payroll innovation, making it harder for businesses to create their own payroll offerings. By building on Check’s best in class infrastructure, flexible API, and deep expertise, platforms can launch profitable payroll businesses much faster, and with little overhead or administrative burden. Since Check’s public launch in January 2021, leading vertical SaaS companies and large scale workforce management horizontal platforms have built successful payroll businesses on its infrastructure. Check’s partners collectively serve more than 250,000 businesses and over 4 million employees. Check is backed by Stripe, Thrive Capital, Index Ventures, and Bedrock.

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.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

Truepill is a B2B pharmacy fulfillment service headquartered in San Mateo, California. Founded in 2016 by Umar Afridi and Sid Viswanathan, the company provides a pharmacy API and medication fulfillment to customers across all 50 states from its own facilities. Truepill collaborates with direct-to-consumer brands, digital health companies, and various healthcare organizations to enhance the pharmacy experience. Its technology offers real-time visibility into patients, prescriptions, and order details, facilitating payment flexibility and delivery tracking. With a team of 150 employees, Truepill has attracted investment from several notable investors, including Initialized Capital and Y Combinator.

Castle is a technology company that specializes in online fraud prevention. It offers an API-based solution that enables businesses of all sizes to detect and mitigate user account fraud, a capability previously accessible only to large financial institutions. Castle's platform tracks and analyzes user behavior in real-time, using a wide range of signals such as device fingerprints, keystroke dynamics, and browsing history. When suspicious activity is detected, both the business administrator and the affected user are alerted, allowing for swift and appropriate action. This service is designed to protect a broad spectrum of online businesses, including e-commerce platforms, mobile applications, and cryptocurrency services.

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.

Typeform is a no-code SaaS platform that provides tools designed to enhance user engagement and facilitate data collection through interactive online forms, quizzes, surveys, and asynchronous video solutions. Established in 2012 and headquartered in Barcelona, Spain, with an additional office in San Francisco, California, Typeform aims to transform digital interactions into meaningful human connections. The platform is built to deliver a conversational experience, combining the flow of real-life conversations with the efficiency of web forms, thus offering a more engaging user experience. With over 500 million digital interactions annually, Typeform integrates seamlessly with numerous essential business tools, such as HubSpot, Calendly, and Slack, and employs a globally-distributed workforce of more than 450 people.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

Nginx, established in 2011, is a technology company that specializes in developing and maintaining the open-source web server NGINX. Its offerings include application delivery, load balancing, security, and API management solutions. Key products are NGINX Plus, a software load balancer and web server; NGINX Controller, for managing NGINX Plus; NGINX Unit, a dynamic application server; NGINX Web Application Firewall; and NGINX Amplify, a SaaS monitoring tool. Headquartered in San Francisco, with offices in Cork and Singapore, Nginx operates as a subsidiary of F5 Networks.

Factual Inc. is a location data company that specializes in providing accurate and comprehensive data for mobile advertising, developers, and enterprise solutions. Founded in 2007 and headquartered in Los Angeles, California, with additional offices in New York and Shanghai, Factual offers various services, including local business and point of interest data through APIs, geofencing capabilities for targeted advertising, and a UPC-centric dataset for consumer packaged goods. The company also features Geotag, a reverse geocoder designed for high-volume geotagging. Factual's platform supports product and engineering teams, marketers, and data analysts by enabling them to build digital products and execute impactful marketing strategies based on reliable location data. As of April 2020, Factual operates as a subsidiary of Foursquare Labs, Inc.

Typeform is a no-code SaaS platform that provides tools designed to enhance user engagement and facilitate data collection through interactive online forms, quizzes, surveys, and asynchronous video solutions. Established in 2012 and headquartered in Barcelona, Spain, with an additional office in San Francisco, California, Typeform aims to transform digital interactions into meaningful human connections. The platform is built to deliver a conversational experience, combining the flow of real-life conversations with the efficiency of web forms, thus offering a more engaging user experience. With over 500 million digital interactions annually, Typeform integrates seamlessly with numerous essential business tools, such as HubSpot, Calendly, and Slack, and employs a globally-distributed workforce of more than 450 people.

MinIO, Inc. is a developer of a high-performance, open-source distributed object storage server that is fully compatible with Amazon S3 APIs. Founded in 2014 and based in Palo Alto, California, the company focuses on providing a minimal object storage solution optimized for cloud-native workloads, making it suitable for deployment in both public and private clouds, including Kubernetes environments. MinIO's platform enables enterprises to manage unstructured data effectively, supporting various applications such as machine learning, analytics, and data backup and archival processes. The company also hosts a MinIO play server, allowing developers and system administrators to familiarize themselves with its S3-compatible object storage capabilities.

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.

Nginx, established in 2011, is a technology company that specializes in developing and maintaining the open-source web server NGINX. Its offerings include application delivery, load balancing, security, and API management solutions. Key products are NGINX Plus, a software load balancer and web server; NGINX Controller, for managing NGINX Plus; NGINX Unit, a dynamic application server; NGINX Web Application Firewall; and NGINX Amplify, a SaaS monitoring tool. Headquartered in San Francisco, with offices in Cork and Singapore, Nginx operates as a subsidiary of F5 Networks.

Standard Treasury is a financial technology company focused on simplifying the banking experience for businesses, particularly small enterprises and startups. By offering a financial application that utilizes standard application programming interfaces (APIs), the company facilitates smoother interactions between businesses and their banks. Their services include electronic checks, foreign exchange, rate quoting, and other essential banking functionalities, allowing businesses to manage financial transactions more efficiently. Standard Treasury aims to eliminate the complexities often associated with integrating banking services, which traditionally require cumbersome processes like sending large files with extensive specifications. Through its innovative approach, Standard Treasury seeks to streamline financial decision-making for its clients.

BitPay provides enterprise-grade bitcoin payment solutions for businesses, offering tools to accept digital currency payments and convert them to fiat. The platform includes a RESTful API and a bitcoin payment gateway, support for native payment protocol and signed payment requests, and a wallet solution named Copay that includes hardware security integration for private key generation and transaction signing. BitPay also offers BitPay Send, a payout service that enables organizations to disburse cryptocurrency to employees, affiliates, customers, vendors, and contractors. The company partners with payment processors to support merchants and has a focus on enabling merchants to accept Bitcoin and settle in traditional currencies. Founded in 2011, BitPay serves organizations across industries seeking blockchain-based payment acceptance and management.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

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.

Kong Inc., established in 2009 and headquartered in San Francisco, specializes in API management. It operates an API marketplace, facilitating the distribution, monetization, and management of cloud-based services. Kong's key products include Kong, an open-source API management layer; Kong Enterprise Edition, a scalable microservices API platform; and Galileo, an analytics tool for API and microservice monitoring. Additionally, Kong offers API Documentation and Developer Portal, aiding developers in creating and managing API projects securely. The company serves a global client base comprising consumers, providers, developers, and IT teams, promoting productivity, security, and performance in API development.

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.

Factual Inc. is a location data company that specializes in providing accurate and comprehensive data for mobile advertising, developers, and enterprise solutions. Founded in 2007 and headquartered in Los Angeles, California, with additional offices in New York and Shanghai, Factual offers various services, including local business and point of interest data through APIs, geofencing capabilities for targeted advertising, and a UPC-centric dataset for consumer packaged goods. The company also features Geotag, a reverse geocoder designed for high-volume geotagging. Factual's platform supports product and engineering teams, marketers, and data analysts by enabling them to build digital products and execute impactful marketing strategies based on reliable location data. As of April 2020, Factual operates as a subsidiary of Foursquare Labs, Inc.

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.

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.

Last.fm is a social networking platform that specializes in music recommendations, connecting users through their shared musical tastes. Unlike competitors that rely on similar musical attributes for recommendations, Last.fm's unique approach involves analyzing user data, or "scrobbling," from over 600 devices and media players to create personalized internet radio stations. The platform also features artist profiles, discographies, event listings, and community forums that enhance user engagement. A significant aspect of Last.fm's business is its extensive API, which allows third-party applications, such as music streaming services and social media platforms, to leverage Last.fm's user data for additional features. This has fostered a dynamic development community that integrates Last.fm's capabilities with various music services, enabling users to share their playlists and favorite tracks across multiple social networks.

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.