Top Open Source Companies

190 Open Source companies, sorted by total funding raised.

AXAR AI

Runtime for building reliable LLM apps

Mountain View, United States1–10Artificial Intelligence, Developer Tools

Venture RoundJan 2025

BookStack

BookStack is a free, open-source, self-hosted platform for organizing and storing information and...

United Kingdom1–10Developer Tools, Open Source

Funding undisclosed

Chunkr

Open source API service to parse complex documents

1–10Artificial Intelligence, Data & Analytics

Seed

Codeberg

A nonprofit, community-led Git hosting platform for free and open source software projects.

Berlin, Germany1–10Developer Tools, Open Source

Funding undisclosed

DAGWorks Inc.Acquired

Open source tools & services for reliable AI Agents & AI Applications

San Francisco, United States1–10AI Operations, Artificial Intelligence

Funding undisclosed

Dittofeed

Open-source customer engagement & messaging automation

Los Angeles, United States1–10Open Source

SeedJan 2024

Getnao

Cursor for data teams

Analytics, Artificial Intelligence

Funding undisclosed

Gitea

Painless self-hosted all-in-one software development service including Git hosting, code review, ...

Lewes, United States11–50Developer Tools, Open Source

Funding undisclosed

GlusterAcquired

Open source, distributed scale-out file system for unstructured data management; acquired by Red ...

Sunnyvale, United States11–50Cloud, Logistics

Funding undisclosed

Hatchet

Background task orchestration and visibility

New York, United States1–10Developer Tools, Infrastructure

Funding undisclosed

Hydra

We make it easier to build apps and analytics on real-time data

San Francisco, United States1–10Analytics, Data & Analytics

SeedJul 2022

HyperDXAcquired

Open-source, dev-friendly observability.

San Mateo, United States1–10Developer Tools, Infrastructure

SeedJun 2022

Integuru

Integrations without official APIs

San Francisco, United States1–10Artificial Intelligence, Developer Tools

SeedJan 2024

Medplum

API first electronic health record (EHR) that is open source

San Francisco, United States1–10Developer Tools, Healthcare

GrantMay 2023

Million

Make websites fast, automatically

San Francisco, United States1–10AI Assistant, Artificial Intelligence

SeedJan 2024

Mintplex Labs

Building the all-in-one private desktop AI assistant

Irvine, United States1–10AI Assistant, Artificial Intelligence

Pre-seedAug 2022

MonosiClosed

Open Source Data Observability

San Francisco, United States1–10Data & Analytics, Developer Tools

SeedJan 2020

moonrepoClosed

Open source build tool for monorepos and large codebases

Portland, United States1–10Developer Tools, Open Source

Funding undisclosed

Nango

Nango connects products and agents to over 1,000 APIs, generating code-first integrations with au...

San Francisco, United States1–10Developer Tools, Open Source

SeedMar 2026

nCompass Technologies

Deploy hardware accelerated AI models with only one line of code

United States1–10Artificial Intelligence, Cloud

SeedJan 2024

Open Social

Open-source community building platform for NGOs and purpose-driven organizations

Amsterdam - EnschedeOpen Source, SaaS

Venture RoundJul 2020

OpenFoundry

The fastest developer experience for building on open source AI.

San Francisco, United States1–10Artificial Intelligence, Developer Tools

SeedJul 2024

ParadeDB

ParadeDB provides a Postgres-native platform for transactions, full-text and vector search, filte...

New York, United States1–10Analytics, Databases

Series AJul 2025

Parallel UniverseClosed

Helping developers scale their applications with ease.

Israel1–10Cloud, DevOps

Funding undisclosed

Patched

Open-source workflow automation for dev teams

1–10Artificial Intelligence, Developer Tools

Funding undisclosed