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Open Source Startups

Updated August 2026

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

Explore 270 recently funded open source companies with verified founder contact information and fundraising data.

Total Companies
270
Total Funding
$163.4M
Avg Funding
$6.5M
Global Reach
9
countries

Top Cities for Open Source

London
Tel Aviv
Vienna
Austin
Charlotte
Berlin

Recently Funded Companies

Export
London, United Kingdom

Patchstack is a website security and monitoring platform.

$5.0M raised
Sep 2024

Founder Contacts

41,000+ verified contacts

Tel Aviv, Israel

Odigos helps developers by generating distributed traces, metrics, and logs for any application.

$13.0M raised
Sep 2024

Founder Contacts

41,000+ verified contacts

Vienna, Austria

Glasskube is an open source package manager that distributes software to private infrastructure, cloud environments, and on-premises.

$500K raised
Aug 2024

Founder Contacts

41,000+ verified contacts

London, United Kingdom

The only messaging platform without any user IDs

$1.3M raised
Aug 2024

Founder Contacts

41,000+ verified contacts

Austin, United States

Innovation at the cutting edge of IT security

$2.0M raised
Jul 2024

Founder Contacts

41,000+ verified contacts

Charlotte, United States

Leantime is an open source project management system for non-project managers using behavioral science and AI to make work engaging.

$55K raised
Jun 2024

Founder Contacts

41,000+ verified contacts

Berlin, Germany

Agenta is the open-source LLMOps platform that allows developers build production ready LLM-powered applications.

$1.1M raised
Jun 2024

Founder Contacts

41,000+ verified contacts

Melbourne, Australia

SpatialGPT.ai is an AI solution provider for spatial issues.

$3.4M raised
May 2024

Founder Contacts

41,000+ verified contacts

Lewes, United States

Decentralized AI ecosystem for secure, private collaboration on Cifer blockchain, using Federated Learning & Fully Homomorphic Encryption.

$650K raised
May 2024

Founder Contacts

41,000+ verified contacts

Newark, United States

Refine is a react-based web application development platform that offers a wide range of software services.

$2.8M raised
May 2024

Founder Contacts

41,000+ verified contacts

Doylestown, United States

Ory Corp makes and operates Ory Cloud for Zero Trust Security based on Ory's open-source identity, authx, and permission

$5.0M raised
Apr 2024

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Pretzel AI is a modern, open-source Jupyter Notebook replacement for data scientists and analysts.

$500K raised
Apr 2024

Founder Contacts

41,000+ verified contacts

San Francisco, United States

nCompass Technologies enables fast and unlimited deployment of LLMs.

$500K raised
Apr 2024

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Lantern is the simplest method to construct AI apps using Postgres.

$500K raised
Apr 2024

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Exploding Gradients is into building an open-source evaluation and testing infrastructure for LLM applications.

$500K raised
Apr 2024

Founder Contacts

41,000+ verified contacts

Rocklin, United States

Unstructured is an enterprise ETL tool that automatically transforms complex, unstructured data into clean, structured data for GenAI.

$40.0M raised
Mar 2024

Founder Contacts

41,000+ verified contacts

Hamburg, Germany

Flower is a federated learning, analytics, and evaluation platform.

$20.0M raised
Feb 2024

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Vocode is an open-source library for building voice-based LLM applications.

$3.3M raised
Feb 2024

Founder Contacts

41,000+ verified contacts

Wroclaw, Poland

The world's fastest growing open-source ecommerce platform with billions of dollars transacted.

$8.0M raised
Feb 2024

Founder Contacts

41,000+ verified contacts

Aarhus, Denmark

Coana uses advanced reachability analysis to scan for vulnerabilities in open source dependencies, cutting false positives by over 80%.

$1.6M raised
Jan 2024

Founder Contacts

41,000+ verified contacts

New York, United States

Atri Labs is an open-source web framework that helps Python developers create production web applications.

Jan 2024

Founder Contacts

41,000+ verified contacts

Seoul, South Korea

The global leader in binary-level, open source software security and compliance.

$2.3M raised
Dec 2023

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Featureform specializes in developing an open-source virtual feature store.

$5.5M raised
Dec 2023

Founder Contacts

41,000+ verified contacts

San Francisco, United States

Replicate provides a platform for open source machine learning models that enables users to run and refine open-source models with an API.

$40.0M raised
Dec 2023

Founder Contacts

41,000+ verified contacts

New York, United States

Charm makes the command line glamorous.

$6.0M raised
Nov 2023

Founder Contacts

41,000+ verified contacts

Showing 151 to 175 of 270 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 270 open source companies tracked in the VCBacked database.

Average Funding
$6.5M
Total Funding Tracked
$163.4M
Countries Represented
9

Distribution by Funding Stage

Other25 companies

Top Cities for Open Source

1.San Francisco
7 companies$50.8M
2.London
2 companies$6.3M
3.New York
2 companies$6.0M
4.Tel Aviv
1 companies$13.0M
5.Vienna
1 companies$500K

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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