head to head · open source
Reflex vs plannotator
Reflex has 28,986 GitHub stars, 1,827 forks, 346 open issues and last shipped 2 days ago. plannotator has 9,814 stars, 731 forks, 155 open issues and last shipped yesterday. Reflex leads on adoption by 195% (28,986 vs 9,814 stars). Reflex is written in Python under Apache-2.0; plannotator is written in TypeScript under Apache-2.0. Reflex has attracted 6% as many forks as stars, plannotator 7%. plannotator was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | plannotator | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 9.8K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 1.8K | ⑂ 731 |
| 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 plannotator if
- You want the plannotator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and plannotator 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 plannotator
Everything you need to annotate and stay in the loop with your agents Markdown Review • Code Review • HTML Artifacts Annotate plans, specs, markdown, and HTML before implementation. Review diffs and PRs. Send feedback to your agent. Watch the og demo · Installation guide · Official site · Visual HTML Skills · Herdr Annotate Plannotator Plannotator is a local, browser based review surface for AI coding agents: Claude Code, Codex, Copilot CLI, Gemini CLI, OpenCode, Kiro, Droid, Amp, and Pi. It plugs directly into your agent through its hooks and commands. When the agent proposes a plan, html, or finishes writing…
read the full plannotator overview →
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Frequently asked questions
Is Reflex or plannotator more popular?
Reflex has 28,986 GitHub stars and plannotator has 9,814. Reflex has the larger community by that measure.
Are Reflex and plannotator free?
Both are open source. Reflex is licensed under Apache-2.0 and plannotator under Apache-2.0. Neither carries a licence fee.
What is the difference between Reflex and plannotator?
Reflex is written in Python and plannotator in TypeScript. 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 plannotator?
Choose Reflex if you want the larger community (28,986 stars) or its Apache-2.0 licence terms. Choose plannotator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.