head to head · open source
caddy vs rust-rpxy
caddy has 78,453 GitHub stars, 5,184 forks, 286 open issues and last shipped 2 days ago. rust-rpxy has 781 stars, 68 forks, 17 open issues and last shipped yesterday. caddy leads on adoption by 9,945% (78,453 vs 781 stars). caddy is written in Go under Apache-2.0; rust-rpxy is written in Rust under MIT. caddy has attracted 7% as many forks as stars, rust-rpxy 9%. rust-rpxy was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 5 topic tags (acme, http, http3, https), so they are genuine substitutes rather than adjacent tools.
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
| caddy | rust-rpxy | |
|---|---|---|
| GitHub stars | ★ 78K | ★ 781 |
| License | Apache-2.0 | MIT |
| Written in | Go | Rust |
| Last push | 2026-10-26 | 2026-10-27 |
| Forks | ⑂ 5.2K | ⑂ 68 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick caddy if
- You weight community size — 78K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick rust-rpxy if
- You want the rust-rpxy feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and rust-rpxy fits your workflow better
About caddy
a project Every site on HTTPS Caddy is an extensible server platform that uses TLS by default. Releases · Documentation · Get Help Powered by Special thanks to: Warp, built for coding with multiple AI agents Available for MacOS, Linux, & Windows Menu Features Install Build from source For development With version information and/or plugins Quick start Overview Full documentation Getting help About Features Easy configuration with the Caddyfile Powerful configuration with its native JSON config Dynamic configuration with the JSON API Config adapters if you don't like JSON Automatic HTTPS by default ZeroSSL and…
read the full caddy overview →
About rust-rpxy
rpxy: A simple and ultrafast reverse proxy serving multiple domain names with TLS termination, written in Rust Work in progress project that is being evolved. [!NOTE] This project is an HTTP (i.e., Layer 7) reverse proxy. If you are looking for a TCP/UDP (i.e., Layer 4) reverse proxy, please check my other project rpxy l4 . [!NOTE] If rpxy and our other projects like rpxy l4 are useful for you and your organization, please consider sponsoring us on GitHub Sponsors to help sustain the project. We are also open to any kind of support, including donations and commercial agreements. Introduction rpxy [ahr pik see]…
read the full rust-rpxy overview →
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Frequently asked questions
Is caddy or rust-rpxy more popular?
caddy has 78,453 GitHub stars and rust-rpxy has 781. caddy has the larger community by that measure.
Are caddy and rust-rpxy free?
Both are open source. caddy is licensed under Apache-2.0 and rust-rpxy under MIT. Neither carries a licence fee.
What is the difference between caddy and rust-rpxy?
caddy is written in Go and rust-rpxy in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, caddy or rust-rpxy?
Choose caddy if you want the larger community (78,453 stars) or its Apache-2.0 licence terms. Choose rust-rpxy if its feature set, stack or MIT licence fits better. Both are self-hostable.