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
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- iPad
- Flathub
- Ubuntu
- Debian
- Snapcraft




Signal is the most popular Windows, Android, Mac & iPhone alternative to AIM.
Signal is the most popular Open Source & free alternative to AIM.
- Signal is Free and Open Source
- Signal is Privacy focused, Security-focused and Lightweight

















































As opposed to AIM this is a SMS replacement that requires a phone number.