head to head · open source
Stoat vs certspotter
Stoat has 3,442 GitHub stars, 409 forks, 139 open issues and last shipped 4 days ago. certspotter has 1,197 stars, 104 forks, 18 open issues and last shipped 7 days ago. Stoat leads on adoption by 188% (3,442 vs 1,197 stars). Stoat is written in Rust under a custom or non-standard licence; certspotter is written in Go under MPL-2.0. Stoat has attracted 12% as many forks as stars, certspotter 9%. Stoat 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
| Stoat | certspotter | |
|---|---|---|
| GitHub stars | ★ 3.4K | ★ 1.2K |
| License | Custom / other | MPL-2.0 |
| Written in | Rust | Go |
| Last push | 2026-11-01 | 2026-10-29 |
| Forks | ⑂ 409 | ⑂ 104 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Stoat if
- You weight community size — 3.4K stars and counting
- You want the Custom / other license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick certspotter if
- You want the certspotter feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Go
- You evaluated both and certspotter fits your workflow better
About Stoat
Stoat Backend The services and libraries that power the Stoat service.
read the full Stoat overview →
About certspotter
Cert Spotter Certificate Transparency Monitor Open Source Edition Cert Spotter is a Certificate Transparency log monitor from SSLMate that alerts you when an SSL/TLS certificate is issued for one of your domains. Cert Spotter is easier to use than other open source CT monitors, since it does not require a database. It's also more robust, since it uses a special certificate parser that ensures it won't miss certificates. Cert Spotter is available as a hosted service by SSLMate that also provides monitoring for expiring and incorrectly installed certificates, Slack notifications, and a Web dashboard for tracking…
read the full certspotter overview →
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Frequently asked questions
Is Stoat or certspotter more popular?
Stoat has 3,442 GitHub stars and certspotter has 1,197. Stoat has the larger community by that measure.
Are Stoat and certspotter free?
Both are open source. Stoat has no licence declared in this registry, and certspotter is licensed under MPL-2.0. Both are free to self-host.
What is the difference between Stoat and certspotter?
Stoat is written in Rust and certspotter 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, Stoat or certspotter?
Choose Stoat if you want the larger community (3,442 stars) or its Custom / other licence terms. Choose certspotter if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.