head to head · open source
langchain vs jcode
langchain has 148,892 GitHub stars, 25,031 forks, 492 open issues and last shipped yesterday. jcode has 21,423 stars, 2,499 forks, 492 open issues and last shipped yesterday. langchain leads on adoption by 595% (148,892 vs 21,423 stars). langchain is written in Python under MIT; jcode is written in Rust under MIT. langchain has attracted 17% as many forks as stars, jcode 12%. 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 | jcode | |
|---|---|---|
| GitHub stars | ★ 149K | ★ 21K |
| License | MIT | MIT |
| Written in | Python | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 25K | ⑂ 2.5K |
| 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 jcode if
- You want the jcode feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and jcode 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 jcode
jcode The most RAM efficient harness The most intelligent harness Website · Docs · SDK · Benchmarks · Features · Install · Quick Start · Further Reading · Contributing Installation Need Homebrew, source builds, provider setup, or want an agent to set it up for you? Jump to detailed installation. Updating Run /update in the TUI to download the latest stable release in the background and reload with your session preserved. From a terminal, use jcode update , then restart the client. Both commands use the same update policy, including for dev builds. Older or equal release versions are skipped. For a development…
read the full jcode overview →
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Frequently asked questions
Is langchain or jcode more popular?
langchain has 148,892 GitHub stars and jcode has 21,423. langchain has the larger community by that measure.
Are langchain and jcode free?
Both are open source. langchain is licensed under MIT and jcode under MIT. Neither carries a licence fee.
What is the difference between langchain and jcode?
langchain is written in Python and jcode in Rust. 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 jcode?
Choose langchain if you want the larger community (148,892 stars) or its MIT licence terms. Choose jcode if its feature set, stack or MIT licence fits better. Both are self-hostable.