All Industries

Top Open Source Companies

185 Open Source companies, sorted by total funding raised.

BotCity

Open Source Python RPA + orchestration for tech teams.

San Francisco, United States11–50Artificial Intelligence, Automation
Series A·$15.0M·Sep 2025
Edge DB

Open-source graph-relational database addressing SQL ergonomic limitations with type safety and p...

San Francisco, United States11–50Databases, Developer Tools
Series A·$15.0M·Nov 2022
QuestDB

The fastest open source time series database

London, United Kingdom11–50Analytics, Data & Analytics
Series A·$14.3M·Nov 2021
FernAcquired

Instantly offer SDKs and API Docs

New York, United States11–50Developer Tools, Open Source
Series A·$13.0M·Apr 2025
Svix

Enterprise ready webhooks service, open-source and in the cloud

New York, United States11–50Developer Tools, Open Source
Series A·$13.0M·Feb 2023
GlusterAcquired

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

Sunnyvale, United States11–50Cloud, Open Source
Series B·$12.5M·Nov 2010
Onyx

Open Source AI Assistant and Enterprise Search

San Francisco, United States1–10Natural Language Processing, Open Source
Seed·$10.0M·Mar 2025
Citus DataAcquired

Real-time. Big data. PostgreSQL

11–50Data & Analytics, Databases
Venture Round·$9.5M·Oct 2015
RethinkDBAcquired

The open source database for the realtime web.

11–50Open Source
Series A·$9.2M·Dec 2013
Elementary

Open-source data observability for data teams

Tel Aviv-Yafo, Israel11–50Analytics, Data & Analytics
Seed·$8.5M·Jan 2021
highlight.ioAcquired

The open source, fullstack monitoring platform: stop guessing why…

Seattle, United States1–10Developer Tools, Open Source
Seed·$8.0M
Mentra

Building the open source smart glasses operating system.

San Francisco, United States1–10AR/VR, Artificial Intelligence
Seed·$8.0M·Jul 2025
bloop

Modernising legacy code with AI

London, United Kingdom1–10Artificial Intelligence, Open Source
Seed·$7.4M·Dec 2021
Scarf

Privacy-conscious, cookie-free usage analytics for open-source projects, providing sales and mark...

Oakland, United States11–50Developer Tools, Open Source
Series A·$7.3M·Dec 2021
LanternClosed

Postgres vector database extension to build AI applications

San Francisco, United States1–10Artificial Intelligence, Databases
Venture Round·$6.8M·Jan 2024
OpenPipeAcquired

Turn expensive prompts into cheap fine-tuned models

Seattle, United States1–10AI Operations, Artificial Intelligence
Seed·$6.7M·Mar 2024
S
SigNoz

Open-source observability platform built on OpenTelemetry with APM, logs, traces, metrics, and al...

United States11–50Developer Tools, Cloud
Seed·$6.5M·Sep 2023
SigNoz

Open source alternative to DataDog

San Francisco, United States11–50Developer Tools, Open Source
Series A·$6.5M·Sep 2023
DBeaver

DBeaver is an open source SQL client IDE and database tool.

New York, United States51–200Databases, Developer Tools
Seed·$6.0M·Apr 2023
Shuttle

Build Backends. Fast.

London, United Kingdom11–50Developer Tools, Open Source
Seed·$6.0M·Oct 2025
CodeStreamAcquired

CodeStream is a Developer Collaboration Platform designed to…

New York, United States1–10Developer Tools, Open Source
Venture Round·$5.6M·Aug 2019
Helicone

LLM Observability for Developers

San Francisco, United States1–10AI Operations, Analytics
Seed·$5.5M·Sep 2024
Wasp

Configuration language for building enterprise web apps 10x faster

Zagreb, Croatia1–10Developer Tools, Open Source
Seed·$5.2M·Apr 2025
Continue

Create, share, and use custom AI code assistants

San Francisco, United States1–10Artificial Intelligence, Cybersecurity
SAFE·$5.1M·Feb 2025
Ballerine

Open-source KYC and risk management infrastructure

1–10Financial Services, Fintech
Seed·$5.0M·May 2023