head to head · open source
Reflex vs Coder
Reflex has 28,893 GitHub stars, 1,777 forks, 346 open issues and last shipped today. Coder has 15,676 stars, 1,525 forks, 996 open issues and last shipped today. Reflex leads on adoption by 84% (28,893 vs 15,676 stars). Reflex is written in Python under Apache-2.0; Coder is written in Go under AGPL-3.0. Reflex has attracted 6% as many forks as stars, Coder 10%. Coder 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 | Coder | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 16K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 1.8K | ⑂ 1.5K |
| 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 Coder if
- You want the Coder feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and Coder 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 Coder
Coder is a self hosted platform for cloud development environments and AI coding agents. It is written in Go, released under AGPL 3.0, and listed under Developer Tools / Version Control & Collaboration. Teams define workspaces with Terraform, connect through a secure Wireguard tunnel, and run environments on EC2 VMs, Kubernetes Pods, or Docker Containers.
read the full Coder overview →
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Frequently asked questions
Is Reflex or Coder more popular?
Reflex has 28,893 GitHub stars and Coder has 15,676. Reflex has the larger community by that measure.
Are Reflex and Coder free?
Both are open source. Reflex is licensed under Apache-2.0 and Coder under AGPL-3.0. Neither carries a licence fee.
What is the difference between Reflex and Coder?
Reflex is written in Python and Coder 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 Coder?
Choose Reflex if you want the larger community (28,893 stars) or its Apache-2.0 licence terms. Choose Coder if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.