All Industries

Top Open Source Companies

190 Open Source companies, sorted by total funding raised.

ContinueAcquired

Create, share, and use custom AI code assistants

San Francisco, United States1–10Artificial Intelligence, Cybersecurity
SAFETotal funding$5.1MFeb 2025
Ballerine

Open-source KYC and risk management infrastructure

1–10Financial Services, Fintech
SeedTotal funding$5.0MMay 2023
Reflex

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

San Francisco, United States1–10Artificial Intelligence, Developer Tools
SeedTotal funding$5.0MAug 2023
OpenReplay

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

United States11–50Developer Tools, Open Source
SeedTotal funding$4.8MJun 2022
Common Paper

The SAFE for commercial contracts

Philadelphia, United States1–10Legal Tech, Open Source
SeedTotal funding$4.5MMar 2022
Lingo.dev

Lingo.dev measures translation quality, translates with LLMs, and proofreads with native speakers...

San Francisco, United States1–10Artificial Intelligence, Developer Tools
SeedTotal funding$4.2MDec 2024
SubImage

Software that maps your infrastructure. Open core alternative to Wiz

1–10Artificial Intelligence, Cybersecurity
SeedTotal funding$4.2MJan 2025
PeerDBAcquired

Fast, native ETL for Postgres 🐘 🚀

United States1–10Data & Analytics, Databases
SeedTotal funding$4.1MApr 2024
Astral

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

New York, United States11–50Developer Tools, Open Source
SeedTotal funding$4.0MApr 2023
LangfuseAcquired

Langfuse is an open-source AI engineering platform for tracing, evaluating, managing prompts, and...

Berlin, Germany1–10Analytics, Artificial Intelligence
SeedTotal funding$4.0MNov 2023
O
OpenbaseClosed

Open-source library discovery

San Francisco, United StatesCybersecurity, Developer Tools
SeedTotal funding$4.0MJan 2020
Reworkd

Reworkd makes it possible to effortlessly extract web data at scale with no code, no maintenance,...

San Francisco, United States1–10Artificial Intelligence, Generative AI
SeedTotal funding$4.0MJul 2024
Webiny

Open-source framework for building serverless applications

London, United Kingdom1–10Developer Tools, Open Source
SeedTotal funding$4.0MAug 2021
refine

Open-source Retool for enterprise

San Francisco, United States1–10Developer Tools, Open Source
SeedTotal funding$3.8MJun 2024
Beam

Beam provides cloud infrastructure that helps developers ship AI products without managing server...

New York, United States1–10Artificial Intelligence, Developer Tools
SeedTotal funding$3.5MMay 2022
TrieveAcquired

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

San Francisco, United States1–10Artificial Intelligence, Developer Tools
SeedTotal funding$3.5MSep 2024
Chaos GeniusAcquired

DataOps Observability Platform for Snowflake

San Francisco, United States1–10Analytics, Artificial Intelligence
SeedTotal funding$3.3MJan 2023
Vocode

Vocode provides open source voice AI to build, deploy, and scale hyperrealistic voice agents on t...

San Francisco, United States1–10Developer Tools, Generative AI
SeedTotal funding$3.3MFeb 2024
KeepAcquired

The open-source AIOps platform

Tel Aviv-Yafo, Israel1–10Open Source, SaaS
Pre-seedTotal funding$3.2MOct 2024
TensilClosed

We turn machine learning models into custom hardware.

San Francisco, United States1–10Artificial Intelligence, Hardware
SeedTotal funding$3.0MApr 2020
Confident AI

Confident AI gives engineering, product, and quality teams one platform to evaluate, observe, and...

San Francisco, United States1–10Artificial Intelligence, Developer Tools
SeedTotal funding$2.7MApr 2025
Skyvern

Skyvern automates browser workflows with AI, handling logins, form fills, data extraction, and ot...

San Francisco, United States1–10Artificial Intelligence, Automation
SeedTotal funding$2.7MDec 2024
Ossprey

Cybersecurity platform that uses AI to scan and block hidden malware in software applications.

Cybersecurity, Open Source
Pre-seedTotal funding$2.6MJul 2026
CustomerOSClosed

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

London, United Kingdom1–10Open Source
Pre-seedTotal funding$2.6MJun 2023
Netmaker

Automated WireGuard networks for distributed systems and Kubernetes

Asheville, United States1–10Cybersecurity, Developer Tools
SeedTotal funding$2.3MOct 2022