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

Project Activity

See All Activity >

License

Affero GNU Public License

Follow Signal

Signal Web Site

Other Useful Business Software

$300 Free Credits to Build on Google Cloud

New customers can spin up VMs, build with AI, and query data at no cost.

Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.

Start Free

Rate This Project

User Reviews

Be the first to post a review of Signal!

Additional Project Details

Operating Systems

Android

Programming Language

Kotlin

Related Categories

Kotlin Messaging Platform

Registered

2025-07-22

Similar Business Software

Signal

Fast, simple, secure. Privacy that fits in your pocket. Send high-quality group, text, voice, video, document, and picture messages anywhere in the world without SMS or MMS fees. Signal messages and calls are always end-to-end encrypted and painstakingly engineered to keep your communication...

See Software
Wire

Wire protects critical communications for the world’s most security-demanding organizations. Wire's highest security standards enable users to communicate securely, thanks to the most advanced encryption and its Zero-Trust architecture, while facilitating user administrators to manage and...

See Software
Element

Element is a secure communications platform built on Matrix: a decentralised and end-to-end encrypted protocol. Bring your teams together, boost productivity and workplace satisfaction, while retaining complete ownership of your data. Element is a leader in the Forrester Wave: Secure...

See Software
Brosix

Brosix Instant Messenger (IM) supports businesses to streamline and secure their team communication through private team communication networks. Brosix provides businesses with all of the tools they need to increase team productivity in one user friendly and fully encrypted platform, including...

See Software
Chanty

Chanty is an internal communication app that bridges the gap between back-office and frontline staff, enabling secure, on-the-go access for every employee on any device, anywhere. With Chanty, you can view all your messages, contacts, and tasks in one place, even offline. Its clear user...

See Software
SimpleX

The first messenger without user IDs. Other apps have user IDs: Signal, Matrix, Session, Briar, Jami, Cwtch, etc. SimpleX does not, not even random numbers. This radically improves your privacy. Many users asked: if SimpleX has no user identifiers, how can it know where to deliver...

See Software