Signal is an encrypted messaging service for instant messaging, voice, and video calls. The instant messaging function includes sending text, voice notes, images, videos, and other files. Communication may be one-to-one between users, or for group messaging.
The application uses a centralized computing architecture and is cross-platform software. It was developed by the non-profit Signal Foundation and its subsidiary, Signal Messenger LLC. This software is free and open-source.
The official Android app generally uses the proprietary Google Play Services, although it is designed to work without them. Signal is also distributed for iOS and desktop programs for Windows, macOS, and Linux. Registration for desktop use requires an iOS or Android device.
Signal uses mobile telephone numbers as an identifier for users. It secures all communications with end-to-end encryption. The client software includes mechanisms by which users can independently verify the identity of their contacts and the integrity of the data channel.
The number does not have to be the same as on the device’s SIM card. It can also be a VoIP number or a landline as long as the user can receive the verification code and have a separate device to set up the software. A number can only be registered on one mobile device at a time. Account registration requires an iOS or Android device.
Share Without Insecurity
State-of-the-art end-to-end encryption (powered by the open-source Signal Protocol) keeps your conversations secure. Nobody can’t read your messages or listen to your calls, even the developers of this app. Privacy isn’t an optional mode – it’s just the way that the app works.
Share text, voice messages, photos, videos, GIFs, and files for free. This app uses your phone’s data connection so you can avoid SMS and MMS fees.
Make crystal-clear voice and video calls to people who live across town, or the ocean, with no long-distance charges.
Make Privacy Stick
Add a new layer of expression to your conversations with encrypted stickers. You can also create and share your sticker packs.
Get Together with Groups
Group chats make it easy to stay connected to your family, friends, and coworkers.
No ads. No trackers.
There are no ads, no affiliate marketers, and no creepy tracking in the application. So focus on sharing the moments that matter with the people who matter to you.
What’s New in Signal 6.41.0:
- Fixed the transition animation for video tiles when someone joins or leaves a group call. When you see a friend’s face slide into view, that’s a social movement.
- Now you can click on a profile photo or group avatar in the chat header to quickly access chat settings or view any unseen stories from that chat.
Supported Operating Systems:
- Windows 10, 11
- macOS 10.13 and above.
- iOS 13 and higher
- Android 5.0 and higher
Size: 113 MB