Signal

Signal-Android is the official open-source Android client for Signal, a secure messaging app focused on end-to-end encryption and privacy. Developed by the Signal Foundation, it enables private messaging, voice, and video calls, without storing user data. Signal uses the Signal Protocol for encryption and does not collect metadata, making it one of the most privacy-focused communication platforms available.

Features

End-to-end encrypted messages, calls, and media
No ads or user tracking
Disappearing messages and safety numbers
Encrypted group messaging
Open-source Signal Protocol implementation
Cross-platform sync with desktop and iOS

Project Samples

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License

Affero GNU Public License

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Signal Web Site

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Additional Project Details

Operating Systems

Android

Programming Language

Kotlin

Related Categories

Kotlin Messaging Platform

Registered

2025-07-22

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