head to head · open source
twinny vs crit
twinny has 3,692 GitHub stars, 240 forks, 48 open issues and last shipped 5 days ago. crit has 1,281 stars, 108 forks, 22 open issues and last shipped 2 days ago. twinny leads on adoption by 188% (3,692 vs 1,281 stars). twinny is written in TypeScript under MIT; crit is written in Go under MIT. twinny has attracted 7% as many forks as stars, crit 8%. crit was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (code-review, developer-tools, llm), 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
| twinny | crit | |
|---|---|---|
| GitHub stars | ★ 3.7K | ★ 1.3K |
| License | MIT | MIT |
| Written in | TypeScript | Go |
| Last push | 2026-11-03 | 2026-11-06 |
| Forks | ⑂ 240 | ⑂ 108 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick twinny if
- You weight community size — 3.7K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick crit if
- You want the crit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and crit fits your workflow better
About twinny
twinny The AI coding assistant for Visual Studio Code that stays inside your network. Code completion, inline edits, chat, code review and more, on a model server you choose: on your machine, on another of your devices, on a hosted API, or on one gateway your whole team shares. Free, open source, MIT licensed, no telemetry, no sign in. Install from the Marketplace · Documentation · What's new · Changelog · Teams · 中文 · Português (BR) For teams: one gateway on your network serves every developer's VS Code, with a key per person, usage, policy and an admin page. npx twinny server quickstart sets it up. Free for…
read the full twinny overview →
About crit
Crit Review and comment on plans, code diffs, frontend elements and send feedback directly to your agent. Adaptive UI for each type of output For agents, plans and code are all the same it's just text, but for us, humans, reviewing generated plans and reviewing web application are two very different activities. Crit adds a proper interface for each type of output and lets you point at the exact thing that is wrong and leave a comment for the agent to fix: crit plan.md renders a markdown file with proper formatting and review UI crit auto detects git changes and shows syntax highlighted diffs for local review…
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Frequently asked questions
Is twinny or crit more popular?
twinny has 3,692 GitHub stars and crit has 1,281. twinny has the larger community by that measure.
Are twinny and crit free?
Both are open source. twinny is licensed under MIT and crit under MIT. Neither carries a licence fee.
What is the difference between twinny and crit?
twinny is written in TypeScript and crit in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, twinny or crit?
Choose twinny if you want the larger community (3,692 stars) or its MIT licence terms. Choose crit if its feature set, stack or MIT licence fits better. Both are self-hostable.