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Open Source Startups

Updated July 2026

Companies in the open source sector developing innovative solutions and technologies.

Explore 215 recently funded open source companies with verified founder contact information and fundraising data.

Total Companies
215
Total Funding
$1.2B
Avg Funding
$49.7M
Global Reach
7
countries

Top Cities for Open Source

Philadelphia
Wilmington
San Jose
San Francisco
Berlin
London

Recently Funded Companies

Export
Philadelphia, United States

dbt Labs is a data analytics software company that develops tools for transforming and managing data within cloud data warehouses.

$222.0M raised
Feb 2022

Founder Contacts

30,000+ verified contacts

Wilmington, United States

Tonbo IO offers an open-source, embedded database library for serverless, data-intensive applications.

$2.9M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

San Jose, United States

Open-source AI computing infrastructure

$14.7M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Together AI is a cloud-based platform designed for constructing open-source generative AI and infrastructure for developing AI models.

$305.0M raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Semantic memory for AI apps and Agents

$7.5M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

London, United Kingdom

SurrealDB is an AI-native, multi-model database that combines various data models into a single engine to simplify application development.

$23.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Bellevue, United States

Temporal Technologies is an open-source platform that simplifies building and managing complex, long-running workflows and microservices.

$300.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Watermelon offers an open-source copilot for code review

$120K raised
Feb 2023

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Manufact provides open-source developer tools and infrastructure for the model context protocol.

$6.3M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Miami, United States

AI + Open Source OS for MSPs

$2.2M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Paris, France

Probabl is a provider of open-source data science and machine learning solutions and services.

$15.2M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Warrington, United Kingdom

Supermemory is an open-source AI platform that enables users to organize, search, and understand all the saved content on the internet.

$3.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Pangolin provides an open-source gateway for secure access to internal applications with user-based permissions.

$4.7M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands

Polars is an open-source library designed for fast and efficient data manipulation.

$21.1M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Cupertino, United States

Obot AI is developing an open-source Enterprise MCP Gateway to facilitate the rapid adoption of AI

$35.0M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

MCP Use provides open-source developer tools and infrastructure for the model context protocol.

$500K raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Montréal, Canada

Uno Platform powers building cross-platform .NET applications in record time

$2.5M raised
Aug 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Cline is a developer of an open‑source AI coding agent that automates software creation tasks within integrated development environments.

$27.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Austin, United States

Anaconda is an open-source distribution of the Python and R programming languages for data science that simplifies package management.

$150.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Santa Monica, United States

LakeFS is a developer of a scalable data version control system

$20.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

FOSSA is the developer's choice for managing open source risk and reporting.

$5.1M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Lewes, United States

Prifina is building a personal data platform for personal AI twins where individual user's data is private-by-default.

$500K raised
Jul 2025

Founder Contacts

30,000+ verified contacts

New York, United States

NetBox Labs develops services for the open-source NetBox IP address management and data center infrastructure management platform.

$35.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Eventual makes processing images, video & audio as easy as SQL. Their platform helps AI companies handle petabytes of multimodal data.

$20.0M raised
Jun 2025

Founder Contacts

30,000+ verified contacts

Belval, Luxembourg

Tadaweb provides an open-source intelligence platform that transforms how businesses generate intelligence from publicly available data.

$19.8M raised
Jun 2025

Founder Contacts

30,000+ verified contacts

Showing 76 to 100 of 215 companies

About the Open Source Startup Ecosystem

The open source sector is an active area of startup innovation and venture capital investment. Companies in this space are developing new technologies, platforms, and services that address evolving market needs and create new business opportunities.

Funding Trends in Open Source

Open Source companies raise capital across various funding stages, from early seed rounds to late-stage growth financing. Investor interest in this sector is driven by the size of the addressable market, the pace of technology adoption, and the potential for scalable business models.

Growth Outlook

The open source sector is expected to continue evolving as technology advances, market dynamics shift, and new opportunities emerge. Companies that demonstrate strong product-market fit, efficient growth, and clear competitive advantages are well-positioned to attract continued investment.

Open Source Funding Breakdown

Here is how funding is distributed among the 215 open source companies tracked in the VCBacked database.

Average Funding
$49.7M
Total Funding Tracked
$1.2B
Countries Represented
7

Distribution by Funding Stage

Other25 companies

Top Cities for Open Source

1.San Francisco
8 companies$368.8M
2.Philadelphia
1 companies$222.0M
3.Wilmington
1 companies$2.9M
4.San Jose
1 companies$14.7M
5.Berlin
1 companies$7.5M

Related Industries

Companies in the open source sector often overlap with or complement businesses in adjacent industries. Exploring related verticals can help you discover additional companies, identify partnership opportunities, and understand the broader competitive landscape.

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