Index Ventures
Index Ventures is a venture capital firm headquartered in London with offices in San Francisco and Geneva, focused on backing technology-driven startups across Europe, North America, and beyond. The firm specializes in high technology and life sciences, and invests across early and growth stages in sectors such as artificial intelligence, software, data, fintech, healthcare, media, mobility, open source, and security. Since its founding in 1996, Index Ventures has partnered with ambitious entrepreneurs to turn bold ideas into global businesses, providing strategic guidance and capital to help companies scale. Notable portfolio companies include Adyen, Deliveroo, Dropbox, Farfetch, King, Slack, and Supercell, reflecting the firm’s track record of supporting market-changing technology companies.
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Past deals in Real Time
incident.io
Series B in 2025
Incident.io offers an incident management tool integrated with Slack for announcing, managing, and resolving incidents in real-time. Its platform enhances workplace communication during outages by providing default solutions, virtual war rooms, and automated workflows.
Cartesia
Series A in 2025
Cartesia provides real-time multimodal intelligence for all devices. Its objective is to develop the next generation of AI: pervasive, interactive intelligence that operates everywhere.
Cartesia
Series A in 2024
Cartesia provides real-time multimodal intelligence for all devices. Its objective is to develop the next generation of AI: pervasive, interactive intelligence that operates everywhere.
incident.io
Series A in 2022
Incident.io offers an incident management tool integrated with Slack for announcing, managing, and resolving incidents in real-time. Its platform enhances workplace communication during outages by providing default solutions, virtual war rooms, and automated workflows.
ReadySet Technology
Series A in 2022
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.
Tactic
Seed Round in 2022
Tactic is a data automation platform that streamlines research workflows by automating searches across multiple sources. It uses keywords to replace repetitive searching, reading, and compiling information from the internet, software-as-a-service tools, and internal data, consolidating insights into actionable outputs. By automating manual data and insights work, the platform helps clients access more information and make informed, accurate decisions.
ClickHouse
Series B in 2021
ClickHouse is an open-source, column-oriented database management system designed for online analytical processing. It enables real-time analytical reporting by executing SQL queries over large datasets. Its columnar storage reduces data footprint and speeds up query performance by eliminating unnecessary data, while vector-based processing enhances CPU efficiency for large-scale workloads. The system handles vast numbers of rows and gigabytes of data per server, delivering secure, reliable, and scalable analytics that help enterprises streamline data processing.
incident.io
Seed Round in 2021
Incident.io offers an incident management tool integrated with Slack for announcing, managing, and resolving incidents in real-time. Its platform enhances workplace communication during outages by providing default solutions, virtual war rooms, and automated workflows.
ClickHouse
Series A in 2021
ClickHouse is an open-source, column-oriented database management system designed for online analytical processing. It enables real-time analytical reporting by executing SQL queries over large datasets. Its columnar storage reduces data footprint and speeds up query performance by eliminating unnecessary data, while vector-based processing enhances CPU efficiency for large-scale workloads. The system handles vast numbers of rows and gigabytes of data per server, delivering secure, reliable, and scalable analytics that help enterprises streamline data processing.
Cutover
Series B in 2021
Founded in 2013 by Craig Gregory, Ky Nichol, Marcus Wildsmith, Cutover is a platform that orchestrates critical enterprise IT change events. It enhances collaboration, reduces risk, and provides real-time visibility into work flows through performance data visualizations. The platform integrates with third-party tools for clearer communication.
Confluent
Series E in 2020
Confluent is a data streaming platform company founded in 2014 and headquartered in Mountain View, California. It builds and offers a platform based on Apache Kafka that enables real‑time data integration, stream processing, and analytics for enterprises, government agencies, and the public sector. The company’s product suite includes Confluent Cloud, a fully managed streaming service; Confluent Platform, a self‑managed SaaS offering; Confluent Operator for Kubernetes; KSQL and ksqlDB for continuous SQL queries; and WarpStream for event‑driven architecture. Confluent generates revenue primarily through subscription fees and professional services. It operates globally with offices in the United States, Europe, and Australia.
Cutover
Series A in 2019
Founded in 2013 by Craig Gregory, Ky Nichol, Marcus Wildsmith, Cutover is a platform that orchestrates critical enterprise IT change events. It enhances collaboration, reduces risk, and provides real-time visibility into work flows through performance data visualizations. The platform integrates with third-party tools for clearer communication.
Confluent
Series D in 2019
Confluent is a data streaming platform company founded in 2014 and headquartered in Mountain View, California. It builds and offers a platform based on Apache Kafka that enables real‑time data integration, stream processing, and analytics for enterprises, government agencies, and the public sector. The company’s product suite includes Confluent Cloud, a fully managed streaming service; Confluent Platform, a self‑managed SaaS offering; Confluent Operator for Kubernetes; KSQL and ksqlDB for continuous SQL queries; and WarpStream for event‑driven architecture. Confluent generates revenue primarily through subscription fees and professional services. It operates globally with offices in the United States, Europe, and Australia.
Chartbeat
Venture Round in 2018
Chartbeat provides a real-time content intelligence platform for publishers. It empowers digital publishing organizations to understand audience engagement with minute-by-minute analytics across various platforms. The company offers insights into visitors, load times, and referring sites, along with alerts for website performance issues.
Confluent
Series C in 2017
Confluent is a data streaming platform company founded in 2014 and headquartered in Mountain View, California. It builds and offers a platform based on Apache Kafka that enables real‑time data integration, stream processing, and analytics for enterprises, government agencies, and the public sector. The company’s product suite includes Confluent Cloud, a fully managed streaming service; Confluent Platform, a self‑managed SaaS offering; Confluent Operator for Kubernetes; KSQL and ksqlDB for continuous SQL queries; and WarpStream for event‑driven architecture. Confluent generates revenue primarily through subscription fees and professional services. It operates globally with offices in the United States, Europe, and Australia.
OmniVirt
Seed Round in 2016
OmniVirt is a technology company based in Millbrae, California, founded in 2012. It specializes in creating an advertising platform that enables the creation and distribution of immersive ads using virtual reality (VR), 360° video, 3D rendering, and augmented reality (AR). The platform allows brands to upload, promote, and analyze their content across a network of publishers and platforms, delivering significantly higher performance than traditional advertising. OmniVirt's technology is compatible with most browsers and trusted by major publishers such as The New York Times, WSJ, Washington Post, and Forbes.
Confluent
Series B in 2015
Confluent is a data streaming platform company founded in 2014 and headquartered in Mountain View, California. It builds and offers a platform based on Apache Kafka that enables real‑time data integration, stream processing, and analytics for enterprises, government agencies, and the public sector. The company’s product suite includes Confluent Cloud, a fully managed streaming service; Confluent Platform, a self‑managed SaaS offering; Confluent Operator for Kubernetes; KSQL and ksqlDB for continuous SQL queries; and WarpStream for event‑driven architecture. Confluent generates revenue primarily through subscription fees and professional services. It operates globally with offices in the United States, Europe, and Australia.
Chartbeat
Series C in 2015
Chartbeat provides a real-time content intelligence platform for publishers. It empowers digital publishing organizations to understand audience engagement with minute-by-minute analytics across various platforms. The company offers insights into visitors, load times, and referring sites, along with alerts for website performance issues.
Chartbeat
Venture Round in 2014
Chartbeat provides a real-time content intelligence platform for publishers. It empowers digital publishing organizations to understand audience engagement with minute-by-minute analytics across various platforms. The company offers insights into visitors, load times, and referring sites, along with alerts for website performance issues.
IRCCloud
Seed Round in 2013
IRCCloud is a cloud-based IRC client that facilitates real-time communication for teams. The application allows users to stay connected and engage in group discussions from any location, minimizing reliance on emails and unnecessary meetings. By integrating various forms of media, such as images, videos, tweets, and code snippets, IRCCloud offers a unified interface that enhances collaboration and streamlines communication. This focus on instant messaging and connectivity positions IRCCloud as a modern solution for organizations seeking to improve their communication efficiency.
Chartbeat
Series B in 2012
Chartbeat provides a real-time content intelligence platform for publishers. It empowers digital publishing organizations to understand audience engagement with minute-by-minute analytics across various platforms. The company offers insights into visitors, load times, and referring sites, along with alerts for website performance issues.
Chartbeat
Series A in 2010
Chartbeat provides a real-time content intelligence platform for publishers. It empowers digital publishing organizations to understand audience engagement with minute-by-minute analytics across various platforms. The company offers insights into visitors, load times, and referring sites, along with alerts for website performance issues.
TweetDeck
Series B in 2010
TweetDeck is a Twitter client designed for desktop, web, and mobile devices, originally developed as an Adobe AIR application. It features a unique columned user interface that allows users to monitor multiple Twitter feeds in a concise and organized manner. This functionality enables users to categorize their main feed into specific topics or groups, providing a broader overview of tweets. In 2011, TweetDeck was acquired by Twitter, which subsequently rebuilt the application using HTML5 technology. The platform integrates various services, enhancing the user experience by allowing real-time monitoring of information from multiple sources.
Dimdim
Series B in 2008
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.
WooMe
Series B in 2008
WooMe is a pioneering online platform that brings the speed dating experience into the digital world. Launched in 2006, it enables users to participate in live, interactive sessions where they can meet five people in just five minutes, based on shared interests. With no lengthy profiles or software downloads required, WooMe offers a fun and efficient way to connect with others.
Dimdim
Series A in 2007
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.
ClickHouse
ClickHouse is an open-source, column-oriented database management system designed for online analytical processing. It enables real-time analytical reporting by executing SQL queries over large datasets. Its columnar storage reduces data footprint and speeds up query performance by eliminating unnecessary data, while vector-based processing enhances CPU efficiency for large-scale workloads. The system handles vast numbers of rows and gigabytes of data per server, delivering secure, reliable, and scalable analytics that help enterprises streamline data processing.
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