head to head · open source
Reflex vs crit
Reflex has 28,987 GitHub stars, 1,827 forks, 346 open issues and last shipped yesterday. crit has 1,266 stars, 105 forks, 22 open issues and last shipped yesterday. Reflex leads on adoption by 2,190% (28,987 vs 1,266 stars). Reflex is written in Python under Apache-2.0; crit is written in Go under MIT. Reflex has attracted 6% 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 1 topic tag (developer-tools), 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
| Reflex | crit | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 1.3K |
| License | Apache-2.0 | MIT |
| Written in | Python | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 1.8K | ⑂ 105 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Reflex if
- You weight community size — 29K 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 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 Reflex
✨ Performant, customizable web apps in pure Python. Deploy in seconds. ✨ [!NOTE] Build faster with Reflex: AI Builder Generate full stack Reflex apps in seconds. Agent Toolkit Connect MCP and Skills to your coding assistant. App Management Deploy and manage your Reflex apps. Introduction Reflex is a library to build full stack web apps in pure Python. Key features: Pure Python Write your app's frontend and backend all in Python, no need to learn Javascript. Full Flexibility Reflex is easy to get started with, but can also scale to complex apps. See our architecture page to learn how Reflex works under the hood…
read the full Reflex 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 Reflex or crit more popular?
Reflex has 28,987 GitHub stars and crit has 1,266. Reflex has the larger community by that measure.
Are Reflex and crit free?
Both are open source. Reflex is licensed under Apache-2.0 and crit under MIT. Neither carries a licence fee.
What is the difference between Reflex and crit?
Reflex is written in Python 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, Reflex or crit?
Choose Reflex if you want the larger community (28,987 stars) or its Apache-2.0 licence terms. Choose crit if its feature set, stack or MIT licence fits better. Both are self-hostable.