head to head · open source
ActivePieces vs second-brain
ActivePieces has 24,584 GitHub stars, 4,214 forks, 573 open issues and last shipped 2 days ago. second-brain has 643 stars, 77 forks, 1 open issues and last shipped today. ActivePieces leads on adoption by 3,723% (24,584 vs 643 stars). ActivePieces is written in TypeScript under a custom or non-standard licence; second-brain is written in Python under MIT. ActivePieces has attracted 17% as many forks as stars, second-brain 12%. second-brain was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agent-tools, ai-agents), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ActivePieces | second-brain | |
|---|---|---|
| GitHub stars | ★ 25K | ★ 643 |
| License | Custom / other | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-09-18 | 2026-09-20 |
| Forks | ⑂ 4.2K | ⑂ 77 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ActivePieces if
- You weight community size — 25K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick second-brain if
- You want the second-brain feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and second-brain fits your workflow better
About ActivePieces
ActivePieces is an open source, TypeScript based no code automation platform for building AI workflows and exposing integrations as MCP servers, aimed at both technical and non technical users who want Zapier style automation while keeping control of their own data.
read the full ActivePieces overview →
About second-brain
Second Brain is an MIT licensed Python agentic framework that turns a machine you control into an assistant with local file intelligence, workflow automation, and LLM driven conversation across a terminal REPL, a web interface, and Telegram, aimed at developers and technical self hosters.
read the full second-brain overview →
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Frequently asked questions
Is ActivePieces or second-brain more popular?
ActivePieces has 24,584 GitHub stars and second-brain has 643. ActivePieces has the larger community by that measure.
Are ActivePieces and second-brain free?
Both are open source. ActivePieces has no licence declared in this registry, and second-brain is licensed under MIT. Both are free to self-host.
What is the difference between ActivePieces and second-brain?
ActivePieces is written in TypeScript and second-brain in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ActivePieces or second-brain?
Choose ActivePieces if you want the larger community (24,584 stars) or its Custom / other licence terms. Choose second-brain if its feature set, stack or MIT licence fits better. Both are self-hostable.