Best Free Open Source
Ranked by community votes · Free only
E
Eclipsa Audio
Open-Source, Royalty-Free Immersive Audio Solutions for the Modern Era.
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M
Mozaik
Mozaik is an open-source TypeScript runtime for concurrent AI agents that run in parallel, share state, react to events, and coordinate without predefined workflows or fixed handoffs
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O
openstatus
Ship your status page before your SOC 2 auditor asks for it
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L
Libre Academy
Free, open-source interactive coding courses
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U
Universal Open Textbook Initiative
Free textbooks for college, university, and K-12: Download 95 open educational resources (OER) in English, Spanish, Arabic, Chinese, Polish
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N
NewsBlur
Follow RSS feeds, train stories with intelligence filters, and read smarter
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E
Epicenter: Local-First, Open-Source Apps
One folder of plain text and SQLite
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T
TRLC-DK1
TRLC-DK1 is an open source dev kit for AI-native robotics
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B
Bayes Impact
The leading nonprofit for AI in public services — Founded in Silicon Valley in 2014, our open-source AI solutions have been trusted by governments and nonprofits around the world, and served millions
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A
Alpha Research
Open source knowledge bases for all humanity
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G
GrowthBook
The 1st warehouse-native platform for experimentation, feature flags, and product analytics
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C
Coasts
Free, open source parallel runtimes for AI agents
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O
OpenSpec
OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required
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C
Critical Window
Govern the US or China through the AI race to 2030