head to head · open source
langchain vs AgentOS
langchain has 146,538 GitHub stars, 24,504 forks, 492 open issues and last shipped yesterday. AgentOS has 667 stars, 97 forks, 10 open issues and last shipped 6 days ago. langchain leads on adoption by 21,870% (146,538 vs 667 stars). langchain is written in Python under MIT; AgentOS is written in TypeScript under Apache-2.0. langchain has attracted 17% as many forks as stars, AgentOS 15%. langchain was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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
| langchain | AgentOS | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 667 |
| License | MIT | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-12 |
| Forks | ⑂ 25K | ⑂ 97 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langchain if
- You weight community size — 147K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick AgentOS if
- You want the AgentOS feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and AgentOS fits your workflow better
About langchain
LangChain is an open source framework for building agents and LLM powered applications, written in Python and released under the MIT license. It lives in the AI and machine learning ecosystem, specifically among AI development platforms, and it works by chaining together interoperable components and third party integrations so that AI application development becomes simpler. The project describes itself as the agent engineering platform, and its abstractions are designed to keep applications working as the underlying technology evolves.
read the full langchain overview →
About AgentOS
AgentOS is an open source TypeScript framework, published on npm as @framers/agentos , for building autonomous AI agents that remember, adapt, and write their own tools.
read the full AgentOS overview →
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Frequently asked questions
Is langchain or AgentOS more popular?
langchain has 146,538 GitHub stars and AgentOS has 667. langchain has the larger community by that measure.
Are langchain and AgentOS free?
Both are open source. langchain is licensed under MIT and AgentOS under Apache-2.0. Neither carries a licence fee.
What is the difference between langchain and AgentOS?
langchain is written in Python and AgentOS in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, langchain or AgentOS?
Choose langchain if you want the larger community (146,538 stars) or its MIT licence terms. Choose AgentOS if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.