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 Rakuten Viber Comments
Signal has no IP telephony ability
- Signal is Free and Open Source
- Signal is Security-focused and Lightweight

























Open source, meaning audit is possible, verifiably secure end-to-end encryption, multiplatform.