head to head · open source
Signal vs Certipy
Signal has 29,568 GitHub stars, 6,933 forks, 498 open issues and last shipped 4 days ago. Certipy has 3,714 stars, 490 forks, 25 open issues and last shipped 3 months ago. Signal leads on adoption by 696% (29,568 vs 3,714 stars). Signal is written in Kotlin under AGPL-3.0; Certipy is written in Python under MIT. Signal has attracted 23% as many forks as stars, Certipy 13%. Signal 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
| Signal | Certipy | |
|---|---|---|
| GitHub stars | ★ 30K | ★ 3.7K |
| License | AGPL-3.0 | MIT |
| Written in | Kotlin | Python |
| Last push | 2026-10-30 | 2026-07-30 |
| Forks | ⑂ 6.9K | ⑂ 490 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Signal if
- You weight community size — 30K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Kotlin
- You value the larger contributor base for long-term maintenance
pick Certipy if
- You want the Certipy feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and Certipy fits your workflow better
About Signal
Signal Android Signal is a simple, powerful, and secure messenger that uses your phone's data connection (WiFi/4G/5G) to communicate securely. Millions of people use Signal every day for free and instantaneous communication anywhere in the world. Send and receive high fidelity messages, participate in HD voice/video calls, and explore a growing set of new features that help you stay connected. Signal’s advanced privacy preserving technology is always enabled, so you can focus on sharing the moments that matter with the people who matter to you. Currently available on the Play Store and signal.org. Also available…
read the full Signal overview →
About Certipy
Certipy AD CS Attack & Enumeration Toolkit Certipy is a powerful offensive and defensive toolkit for enumerating and abusing Active Directory Certificate Services (AD CS). It helps red teamers, penetration testers, and defenders assess AD CS misconfigurations including full support for identifying and exploiting all known ESC1 ESC17 attack paths. [!WARNING] Use only in environments where you have explicit authorization. Unauthorized use may be illegal. 🔍 Features 🔎 Discover Certificate Authorities and Templates 🚩 Identify misconfigurations 🔐 Request and forge certificates 🎭 Perform authentication using…
read the full Certipy overview →
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Frequently asked questions
Is Signal or Certipy more popular?
Signal has 29,568 GitHub stars and Certipy has 3,714. Signal has the larger community by that measure.
Are Signal and Certipy free?
Both are open source. Signal is licensed under AGPL-3.0 and Certipy under MIT. Neither carries a licence fee.
What is the difference between Signal and Certipy?
Signal is written in Kotlin and Certipy in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Signal or Certipy?
Choose Signal if you want the larger community (29,568 stars) or its AGPL-3.0 licence terms. Choose Certipy if its feature set, stack or MIT licence fits better. Both are self-hostable.