head to head · open source
Puter vs certspotter
Puter has 43,554 GitHub stars, 4,064 forks, 19 open issues and last shipped yesterday. certspotter has 1,175 stars, 104 forks, 18 open issues and last shipped 6 days ago. Puter leads on adoption by 3,607% (43,554 vs 1,175 stars). Puter is written in TypeScript under AGPL-3.0; certspotter is written in Go under MPL-2.0. Puter has attracted 9% as many forks as stars, certspotter 9%. Puter 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
| Puter | certspotter | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 1.2K |
| License | AGPL-3.0 | MPL-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-09-18 | 2026-09-13 |
| Forks | ⑂ 4.1K | ⑂ 104 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Puter if
- You weight community size — 44K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- 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 Puter
Puter is an open source, self hostable internet computer that delivers a full desktop environment running directly in a web browser. It functions as a cloud based operating system, integrating file storage, applications, and developer tooling into a single cohesive platform. The project lives in the browser based desktop and cloud infrastructure ecosystem, positioning itself as a free and open alternative to proprietary cloud desktop services.
read the full Puter overview →
About certspotter
Cert Spotter is a lightweight, open source Certificate Transparency log monitor from SSLMate that watches Certificate Transparency logs and alerts you when an SSL/TLS certificate is issued for any domain on your watch list, aimed at site operators, security teams, and PKI administrators who need to catch unauthorized certificates without operating a database.
read the full certspotter overview →
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Frequently asked questions
Is Puter or certspotter more popular?
Puter has 43,554 GitHub stars and certspotter has 1,175. Puter has the larger community by that measure.
Are Puter and certspotter free?
Both are open source. Puter is licensed under AGPL-3.0 and certspotter under MPL-2.0. Neither carries a licence fee.
What is the difference between Puter and certspotter?
Puter is written in TypeScript 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, Puter or certspotter?
Choose Puter if you want the larger community (43,554 stars) or its AGPL-3.0 licence terms. Choose certspotter if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.