head to head · open source
lean-ctx vs open-kritt
lean-ctx has 3,926 GitHub stars, 360 forks, 9 open issues and last shipped yesterday. open-kritt has 2,406 stars, 407 forks, 7 open issues and last shipped yesterday. lean-ctx leads on adoption by 63% (3,926 vs 2,406 stars). lean-ctx is written in Rust under Apache-2.0; open-kritt is written in JavaScript under AGPL-3.0. lean-ctx has attracted 9% as many forks as stars, open-kritt 17%. lean-ctx was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai, ai-agents, ai-security), 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
| lean-ctx | open-kritt | |
|---|---|---|
| GitHub stars | ★ 3.9K | ★ 2.4K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Rust | JavaScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 360 | ⑂ 407 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick lean-ctx if
- You weight community size — 3.9K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick open-kritt if
- You want the open-kritt feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and open-kritt fits your workflow better
About lean-ctx
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read the full lean-ctx overview →
About open-kritt
open·kritt Orchestrate AI agents to find real vulnerabilities in code. An open source, self hosted security and vulnerability research platform that turns focused AI analysis into de duplicated, ranked findings with configurable validation and enrichment. Website · Documentation · Getting started · Contributing · Owners · Research paper What is open·kritt? Pointing a model at an entire repository and asking it to find vulnerabilities rarely works well. open·kritt takes a focused approach: break the research into small, well defined tasks, run them across AI agents in parallel, and combine their output into…
read the full open-kritt overview →
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Frequently asked questions
Is lean-ctx or open-kritt more popular?
lean-ctx has 3,926 GitHub stars and open-kritt has 2,406. lean-ctx has the larger community by that measure.
Are lean-ctx and open-kritt free?
Both are open source. lean-ctx is licensed under Apache-2.0 and open-kritt under AGPL-3.0. Neither carries a licence fee.
What is the difference between lean-ctx and open-kritt?
lean-ctx is written in Rust and open-kritt in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, lean-ctx or open-kritt?
Choose lean-ctx if you want the larger community (3,926 stars) or its Apache-2.0 licence terms. Choose open-kritt if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.