head to head · open source
Reflex vs plannotator
Reflex has 28,891 GitHub stars, 1,778 forks, 346 open issues and last shipped yesterday. plannotator has 8,748 stars, 658 forks, 155 open issues and last shipped yesterday. Reflex leads on adoption by 230% (28,891 vs 8,748 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 8%. Reflex 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 | ★ 8.7K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 1.8K | ⑂ 658 |
| 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
Reflex is an open source Apache 2.0 Python library for building full stack web apps and internal tools entirely in Python, aimed at Python developers who want a browser based frontend without learning JavaScript.
read the full Reflex overview →
About plannotator
Plannotator is a local, browser based review surface for AI coding agents that lets a developer annotate plans, documents, HTML artifacts, and code diffs, share them with a team, and send feedback back to the agent in one action.
read the full plannotator overview →
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Frequently asked questions
Is Reflex or plannotator more popular?
Reflex has 28,891 GitHub stars and plannotator has 8,748. 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 (28,891 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.