Arduino
Startup or tech company
Open-source electronics platform for makers and students.
Ivrea, Italy
DeepSeek
Startup or tech company
AI lab releasing efficient open-weight language models.
Hangzhou, ChinaDeno
Startup or tech company
Secure JavaScript and TypeScript runtime from the creator of Node.js.
San Francisco, United States
Dev.to
Community or network
Open community where software developers write and share.
New York, United States
Docker
Startup or tech company
Container platform that changed how software is packaged and shipped.
San Francisco, United StatesY Combinator
Elastic
Startup or tech company
Company behind Elasticsearch, the search and analytics engine.
Amsterdam, NetherlandsPublic company
Ethereum Foundation
Startup or tech company
Nonprofit supporting the Ethereum blockchain.
Zug, SwitzerlandGanjoor
Startup or tech company
Free, open online library of classical Persian poetry.
Iran
Ghost
Startup or tech company
Nonprofit open-source publishing platform for newsletters and blogs, launched on Kickstarter.
London, United KingdomKickstarter
GitLab
Startup or tech company
Open-core DevOps platform built by a fully remote company.
San Francisco, United StatesY CombinatorPublic company
Godot Engine
Startup or tech company
Free, open-source game engine used by a fast-growing community of independent developers.
Buenos Aires, ArgentinaGrafana Labs
Startup or tech company
Company behind Grafana, the open-source dashboards for monitoring.
New York, United StatesUnicornHooshvare
Startup or tech company
Persian natural language processing team behind the open-source ParsBERT model.
Tehran, Iran
Hugging Face
Startup or tech company
Hub for open-source machine learning models and datasets.
New York, United StatesUnicorn
LangChain
Startup or tech company
Open-source framework and platform for building applications on language models.
San Francisco, United StatesUnicorn
Mistral AI
Startup or tech company
European AI company releasing open-weight language models.
Paris, FranceUnicorn
Mozilla
Startup or tech company
Nonprofit behind the Firefox browser.
San Francisco, United StatesNeon
Startup or tech company
Serverless Postgres database, bought by Databricks in 2025.
San Francisco, United StatesAcquired
Odoo
Startup or tech company
Open-source suite of business apps from accounting to inventory.
Louvain-la-Neuve, BelgiumUnicorn
Our World in Data
Research and data
Open research and data on the world's largest problems.
Oxford, United Kingdom
Prusa Research
Startup or tech company
Open-source 3D printer maker from Prague.
Prague, CzechiaSentry
Startup or tech company
Error tracking and performance monitoring that started as an open-source project.
San Francisco, United States
Signal
Startup or tech company
End-to-end encrypted messaging app run by a nonprofit.
Mountain View, United States
Stability AI
Startup or tech company
Company behind the open Stable Diffusion image model.
London, United Kingdom
Supabase
Startup or tech company
Open-source backend platform built on Postgres.
San Francisco, United StatesY CombinatorUnicorn
Temporal
Startup or tech company
Durable execution platform for reliable workflows, from the creators of Uber's Cadence.
Seattle, United States
Uniswap Labs
Startup or tech company
Company behind Uniswap, the largest decentralised exchange on Ethereum.
New York, United States
Vercel
Startup or tech company
Frontend cloud platform and creator of Next.js.
San Francisco, United StatesUnicornVitalik Buterin
Ecosystem figure
Co-creator of Ethereum.
Zug, Switzerland
Wikipedia
Startup or tech company
Free encyclopedia written by volunteers.
San Francisco, United States
WordPress
Startup or tech company
Open-source publishing software that runs a large share of the web.
San Francisco, United States