All Industries

Top Open Source Companies

185 Open Source companies, sorted by total funding raised.

Reflex

Web apps in pure Python. Deploy with a single command.

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Seed·$5.0M·Aug 2023
OpenReplay

Open-source, self-hosted, session replay tool for developers.

11–50Developer Tools, Open Source
Seed·$4.8M·Jun 2022
Common Paper

The SAFE for commercial contracts

Philadelphia, United States1–10Legal Tech, Open Source
Seed·$4.5M·Mar 2022
Lingo.dev

Automated AI localization for dev teams. (formerly Replexica)

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Seed·$4.2M·Dec 2024
Stackup

Stackup helps businesses manage their crypto assets.

Los Angeles, United States1–10SaaS, Developer Tools
Seed·$4.2M·Jun 2025
SubImage

Software that maps your infrastructure. Open core alternative to Wiz

1–10Artificial Intelligence, Cybersecurity
Seed·$4.2M·Jan 2025
PeerDBAcquired

Fast, native ETL for Postgres 🐘 🚀

1–10Data & Analytics, Databases
Seed·$4.1M·Apr 2024
Astral

Developer tools company building high-performance Python ecosystem tooling including Ruff (linter...

New York, United States11–50Developer Tools, Open Source
Seed·$4.0M·Apr 2023
LangfuseAcquired

Open source LLM engineering platform

Berlin, Germany1–10Analytics, Artificial Intelligence
Seed·$4.0M·Nov 2023
O
OpenbaseClosed

Open-source library discovery

San Francisco, United StatesCybersecurity, Developer Tools
Seed·$4.0M·Jan 2020
Reworkd

The simplest way to extract web data at scale

San Francisco, United States1–10Artificial Intelligence, Generative AI
Seed·$4.0M·Jul 2024
Webiny

Open-source framework for building serverless applications

London, United Kingdom1–10Developer Tools, Open Source
Seed·$4.0M·Aug 2021
refine

Open-source Retool for enterprise

San Francisco, United States1–10Developer Tools, Open Source
Seed·$3.8M·Jun 2024
Beam

AI Infrastructure for Developers

New York, United States1–10Artificial Intelligence, Developer Tools
Seed·$3.5M·May 2022
TrieveAcquired

All-in-one API for search, RAG, & recommendations

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Seed·$3.5M·Sep 2024
Chaos GeniusAcquired

DataOps Observability Platform for Snowflake

San Francisco, United States1–10Analytics, Cybersecurity
Seed·$3.3M·Jan 2023
Vocode

Open source Voice AI

San Francisco, United States1–10Developer Tools, Generative AI
Seed·$3.3M·Feb 2024
KeepAcquired

The open-source AIOps platform

Tel Aviv-Yafo, Israel1–10Open Source, SaaS
Pre-seed·$3.2M·Oct 2024
TensilClosed

We turn machine learning models into custom hardware.

San Francisco, United States1–10Artificial Intelligence, Hardware
Seed·$3.0M·Apr 2020
Confident AI

The DeepEval LLM Evaluation Platform

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Seed·$2.7M·Apr 2025
Skyvern

Open Source AI Agent to automate browser workflows via an API

San Francisco, United States1–10Artificial Intelligence, Automation
Seed·$2.7M·Dec 2024
CustomerOSClosed

The only agent-first CRM, designed for humans and built for B2B SaaS.

London, United Kingdom1–10Open Source
Pre-seed·$2.6M·Jun 2023
Defog.ai

Fine-tuned LLMs for enterprise data analysis

Singapore, Singapore1–10Developer Tools, Generative AI
Seed·$2.2M·Nov 2023
Ukama

Empowering anyone to build cellular network

Pleasanton, United States1–10Deep Tech, Hardware
Seed·$2.2M·Aug 2020
FigClosed

Fig adds visual apps, shortcuts, and autocomplete to your terminal.

San Francisco, United States1–10Cybersecurity, Developer Tools
Seed·$2.2M·Aug 2021