head to head · open source
Reflex vs agentsys
Reflex has 28,987 GitHub stars, 1,827 forks, 346 open issues and last shipped yesterday. agentsys has 1,011 stars, 118 forks, 0 open issues and last shipped yesterday. Reflex leads on adoption by 2,767% (28,987 vs 1,011 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 | ★ 1.0K |
| License | Apache-2.0 | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 1.8K | ⑂ 118 |
| 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
✨ 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 agentsys
AgentSys A modular runtime and orchestration system for AI agents. 24 plugins · 49 agents · 44 skills (across all repos) · 30k lines of lib code · 3,518 tests · 5 platforms Plugins distributed as standalone repos under agent sh org agentsys is the marketplace & installer ⚡ Running this agent 24/7? tiyuvta inference — hosted LLM inference built for always on agents, OpenAI/Anthropic compatible APIs. Commands · Installation · Website · Discussions Built for Claude Code · Codex CLI · OpenCode · Cursor · Kiro New skills, agents, and integrations ship constantly. Follow for real time updates: AI models can write…
read the full agentsys overview →
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Frequently asked questions
Is Reflex or agentsys more popular?
Reflex has 28,987 GitHub stars and agentsys has 1,011. 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 (28,987 stars) or its Apache-2.0 licence terms. Choose agentsys if its feature set, stack or MIT licence fits better. Both are self-hostable.