head to head · open source
ActivePieces vs OpenProgram
ActivePieces has 25,364 GitHub stars, 4,428 forks, 573 open issues and last shipped yesterday. OpenProgram has 520 stars, 63 forks, 1 open issues and last shipped 2 months ago. ActivePieces leads on adoption by 4,778% (25,364 vs 520 stars). ActivePieces is written in TypeScript under a custom or non-standard licence; OpenProgram is written in Python under AGPL-3.0. ActivePieces has attracted 17% as many forks as stars, OpenProgram 12%. ActivePieces was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-agent), 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 | OpenProgram | |
|---|---|---|
| GitHub stars | ★ 25K | ★ 520 |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | Python |
| Last push | 2026-11-04 | 2026-09-18 |
| Forks | ⑂ 4.4K | ⑂ 63 |
| 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 OpenProgram if
- You want the OpenProgram feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and OpenProgram fits your workflow better
About ActivePieces
An open source replacement for Zapier Documentation 🌪️ Create a Piece 🖉 Deploy 🔥 Join Discord 🤯 Welcome to Activepieces All in one AI automation designed to be extensible through a type safe pieces framework written in TypeScript . When you contribute pieces to Activepieces they become automatically available as MCP servers that you can use with LLMs through Claude Desktop, Cursor or Windsurf! 🔥 Why Activepieces is Different: 💖 Loved by Everyone : Intuitive interface and great experience for both technical and non technical users with a quick learning curve. 🌐 Open Ecosystem: All pieces are open source…
read the full ActivePieces overview →
About OpenProgram
Self Programming AI Assistant. Capture, automate, and refine all your workflows. Getting Started · Install · Docs · API Reference · Philosophy · 中文 "The more constraints one imposes, the more one frees oneself." — Igor Stravinsky , Poetics of Music We propose Agentic Programming . An LLM is flexible; code is deterministic. Let the model run everything and you get chaos — unpredictable execution, context explosion, no output guarantees; hard code everything and you lose the intelligence. A harness balances the two, interleaved moment to moment — Python for the flow you want…
read the full OpenProgram overview →
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Frequently asked questions
Is ActivePieces or OpenProgram more popular?
ActivePieces has 25,364 GitHub stars and OpenProgram has 520. ActivePieces has the larger community by that measure.
Are ActivePieces and OpenProgram free?
Both are open source. ActivePieces has no licence declared in this registry, and OpenProgram is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between ActivePieces and OpenProgram?
ActivePieces is written in TypeScript and OpenProgram 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 OpenProgram?
Choose ActivePieces if you want the larger community (25,364 stars) or its Custom / other licence terms. Choose OpenProgram if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.