Best Open Source products of September 2026

Discover the best Open Source products of September 2026 as chosen by Product Hunt users.

1 - 10 of 1,090 Open Source products

1. MastraBuild AI agents with a modern TypeScript stack
•1.7K Followers•
2. SwitchBring any AI agent into Slack, Teams & Discord
•1.1K Followers•
3. Kilo CodeThe open-source agentic engineering platform
•6.2K Followers•
4. Computable GPU Index (CGI)The first open-source price index for GPU compute
•908 Followers•
5. dif.shMarkdown feature flags your coding agent installs for you
•640 Followers•
6. ColdteaMake your software self-driving
•1.3K Followers•
7. Weave Engineering IntelligenceML Models to Measure & Optimize Engineering Work
•937 Followers•2 alternatives•
8. CortexTurn API specs into docs, SDKs, and MCP servers
•600 Followers•
9. Omi2nd brain you trust more than your 1st
•1.6K Followers•1 alternative•
10. SereneDBUltra-Fast Search & Analytics Database, Agentic AI ready
•383 Followers•

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Community's choice

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