head to head · open source
iFixAi vs lean-ctx
iFixAi has 30,176 GitHub stars, 1,677 forks, 2 open issues and last shipped 4 days ago. lean-ctx has 3,890 stars, 353 forks, 9 open issues and last shipped yesterday. iFixAi leads on adoption by 676% (30,176 vs 3,890 stars). iFixAi is written in Python under Apache-2.0; lean-ctx is written in Rust under Apache-2.0. iFixAi has attracted 6% as many forks as stars, lean-ctx 9%. lean-ctx was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, ai-governance), 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
| iFixAi | lean-ctx | |
|---|---|---|
| GitHub stars | ★ 30K | ★ 3.9K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2026-10-16 | 2026-10-19 |
| Forks | ⑂ 1.7K | ⑂ 353 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick iFixAi if
- You weight community size — 30K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick lean-ctx if
- You want the lean-ctx feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and lean-ctx fits your workflow better
About iFixAi
iFixAi English · 简体中文 · 日本語 · 한국어 Independent Auditing of AI Agents Catch your agent's mistakes and blind spots before the shit hits the fan. Quick start • Three ways to run • Test your agent • Scoring • Docs • Contributing One ifixai run , end to end: guided setup picks the system, judge, and suite; the run verifies the connection and saves your config; 32 inspections execute across five pillars; and the result lands as an A–F grade with a scored core pillar scorecard. What it is The existing Eval, Red teaming, and Observability Tools are evaluating the agent mainly based on tech capability (token efficiency…
read the full iFixAi overview →
About lean-ctx
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read the full lean-ctx overview →
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Frequently asked questions
Is iFixAi or lean-ctx more popular?
iFixAi has 30,176 GitHub stars and lean-ctx has 3,890. iFixAi has the larger community by that measure.
Are iFixAi and lean-ctx free?
Both are open source. iFixAi is licensed under Apache-2.0 and lean-ctx under Apache-2.0. Neither carries a licence fee.
What is the difference between iFixAi and lean-ctx?
iFixAi is written in Python and lean-ctx 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, iFixAi or lean-ctx?
Choose iFixAi if you want the larger community (30,176 stars) or its Apache-2.0 licence terms. Choose lean-ctx if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.