head to head · open source
langchain vs oh-my-hermes
langchain has 148,892 GitHub stars, 25,031 forks, 492 open issues and last shipped yesterday. oh-my-hermes has 5,053 stars, 408 forks, 13 open issues and last shipped yesterday. langchain leads on adoption by 2,847% (148,892 vs 5,053 stars). langchain is written in Python under MIT; oh-my-hermes is written in Python under MIT. langchain has attracted 17% as many forks as stars, oh-my-hermes 8%. 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), 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 | oh-my-hermes | |
|---|---|---|
| GitHub stars | ★ 149K | ★ 5.1K |
| License | MIT | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 25K | ⑂ 408 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langchain if
- You weight community size — 149K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick oh-my-hermes if
- You want the oh-my-hermes feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and oh-my-hermes fits your workflow better
About langchain
The agent engineering platform. LangChain is a framework for building agents and LLM powered applications. It helps you chain together interoperable components and third party integrations to simplify AI application development — all while future proofing decisions as the underlying technology evolves. [!TIP] Just getting started? Check out Deep Agents — a higher level package built on LangChain for agents that have built in capabilities for common usage patterns such as planning, subagents, file system usage, and more. Quickstart If you're looking for more advanced customization or agent orchestration, check…
read the full langchain overview →
About oh-my-hermes
All in one package for Hermes Agent. Install once, then just type dag ulw . English 简体中文 日本語 Русский 한국어 Español Français Deutsch Português (Brasil) Italiano oh my hermes is an operating layer for Hermes Agent. You keep talking to Hermes. OMH picks the skill and a model for each lane, and runs the work in parallel. It never patches or replaces Hermes, and it never reports planned work as done. Install Windows and other options → What you get The right model for every lane. Each lane is tagged with a work category: ultrabrain , deep , visual engineering , quick and more. The category picks that lane's model chain…
read the full oh-my-hermes overview →
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Frequently asked questions
Is langchain or oh-my-hermes more popular?
langchain has 148,892 GitHub stars and oh-my-hermes has 5,053. langchain has the larger community by that measure.
Are langchain and oh-my-hermes free?
Both are open source. langchain is licensed under MIT and oh-my-hermes under MIT. Neither carries a licence fee.
What is the difference between langchain and oh-my-hermes?
langchain is written in Python and oh-my-hermes 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, langchain or oh-my-hermes?
Choose langchain if you want the larger community (148,892 stars) or its MIT licence terms. Choose oh-my-hermes if its feature set, stack or MIT licence fits better. Both are self-hostable.