head to head · open source
frp vs sdns
frp has 109,720 GitHub stars, 15,234 forks, 48 open issues and last shipped 16 days ago. sdns has 1,086 stars, 72 forks, 0 open issues and last shipped yesterday. frp leads on adoption by 10,003% (109,720 vs 1,086 stars). frp is written in Go under Apache-2.0; sdns is written in Go under MIT. frp has attracted 14% as many forks as stars, sdns 7%. sdns 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
| frp | sdns | |
|---|---|---|
| GitHub stars | ★ 110K | ★ 1.1K |
| License | Apache-2.0 | MIT |
| Written in | Go | Go |
| Last push | 2026-09-15 | 2026-09-30 |
| Forks | ⑂ 15K | ⑂ 72 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick frp if
- You weight community size — 110K 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 sdns if
- You want the sdns feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and sdns fits your workflow better
About frp
frp is a fast reverse proxy written in Go that exposes a local server behind a NAT or firewall to the internet, built for operators and developers who need inbound access to machines they cannot port forward.
About sdns
sdns is a high performance recursive DNS resolver written in Go that resolves from the root, validates answers against DNSSEC trust anchors and serves DNS over UDP, TCP, TLS, HTTPS and QUIC, intended for operators and privacy focused self hosters who want to run their own resolving name server instead of relying on a third party resolver.
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Frequently asked questions
Is frp or sdns more popular?
frp has 109,720 GitHub stars and sdns has 1,086. frp has the larger community by that measure.
Are frp and sdns free?
Both are open source. frp is licensed under Apache-2.0 and sdns under MIT. Neither carries a licence fee.
What is the difference between frp and sdns?
frp is written in Go and sdns 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, frp or sdns?
Choose frp if you want the larger community (109,720 stars) or its Apache-2.0 licence terms. Choose sdns if its feature set, stack or MIT licence fits better. Both are self-hostable.