head to head · open source
Puter vs certspotter
Puter has 44,062 GitHub stars, 4,140 forks, 19 open issues and last shipped yesterday. certspotter has 1,195 stars, 104 forks, 18 open issues and last shipped 5 days ago. Puter leads on adoption by 3,587% (44,062 vs 1,195 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 | 2026-11-02 | 2026-10-29 |
| 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
The Open Source Internet Computer! « LIVE DEMO » Puter.com · App Store · Developers · X Puter Puter is an advanced, open source, self hostable internet computer designed to be feature rich, fast, and highly extensible. For Users Puter's goal is to provide you with every app and feature you need to work, create, and play under one roof. From a simple Notepad and Voice Recorder to Spreadsheet and Camera, Puter wants to be the all in one solution for your digital life. For Developers Puter provides everything you need to build and publish web apps and games. From AI to Cloud Storage and Database to Serverless…
read the full Puter 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 Puter or certspotter more popular?
Puter has 44,062 GitHub stars and certspotter has 1,195. 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 (44,062 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.