An open-source messaging app emphasizing privacy with encrypted communication. Share texts, calls, photos, and videos without ads or trackers, available across major platforms. Developed by Signal Technology Foundation and praised globally for security measures.
Cost / License
- Free
- Open Source (GPL-3.0)
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- iPad
- Snapcraft
- Flathub
- Ubuntu
- Debian




Signal vs ICQ Comments

- Signal is Free and Open Source
- Signal is Privacy focused, Security-focused and Lightweight

















































Signal is linked to your phone number, unlike ICQ where you obtain an independent number that identifies your account. If I didn't mind sharing personal information like that, I'd just use SMS instead.