head to head · open source
Reflex vs agentsys
Reflex has 28,891 GitHub stars, 1,778 forks, 346 open issues and last shipped yesterday. agentsys has 986 stars, 115 forks, 0 open issues and last shipped 5 days ago. Reflex leads on adoption by 2,830% (28,891 vs 986 stars). Reflex is written in Python under Apache-2.0; agentsys is written in JavaScript under MIT. Reflex has attracted 6% as many forks as stars, agentsys 12%. 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 | agentsys | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 986 |
| License | Apache-2.0 | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-09-17 | 2026-09-13 |
| Forks | ⑂ 1.8K | ⑂ 115 |
| 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 agentsys if
- You want the agentsys feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and agentsys 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 agentsys
AgentSys is a modular runtime and orchestration system for AI agents — a marketplace and installer that ties together 24 plugins, 49 agents, and 44 skills into gated development pipelines — built for developers and teams working in Claude Code, Codex CLI, OpenCode, Cursor, or Kiro who want the work around code generation automated, not only the code generation itself.
read the full agentsys overview →
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Frequently asked questions
Is Reflex or agentsys more popular?
Reflex has 28,891 GitHub stars and agentsys has 986. Reflex has the larger community by that measure.
Are Reflex and agentsys free?
Both are open source. Reflex is licensed under Apache-2.0 and agentsys under MIT. Neither carries a licence fee.
What is the difference between Reflex and agentsys?
Reflex is written in Python and agentsys in JavaScript. 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 agentsys?
Choose Reflex if you want the larger community (28,891 stars) or its Apache-2.0 licence terms. Choose agentsys if its feature set, stack or MIT licence fits better. Both are self-hostable.