Open-source alternatives to WhatsApp

Free, open-source, downloadable replacements for WhatsApp

Signal Android

Private messenger with end-to-end encryption — A private messenger for Android.

alternative to WhatsApp

29.3k+9/dayGNU Affero General Public License v3.0Chatsignalapp/Signal-Android

Android

Simplex Chat

Private messenger with no user identifiers — SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!

alternative to WhatsApp、Threema

19.4k+11/dayGNU Affero General Public License v3.0Chatsimplex-chat/simplex-chat

macOS Windows Linux Android

Franz

Aggregates messaging from many services — Franz is a free messaging app for services like WhatsApp, Slack, Messenger and many more.

alternative to WhatsApp、Slack、Telegram

4.7k+1/dayApache License 2.0Chatmeetfranz/franz

macOS Windows Linux

Whatsie

Feature-rich WhatsApp desktop client for Linux — Feature rich WhatsApp Client for Desktop Linux

alternative to WhatsApp

3.4k+2/dayMIT LicenseChatkeshavbhatt/whatsie

Windows Linux

Deltachat Android

Decentralized private messenger for Android — Decentralized private messenger with chat-shared tools and games for Android

alternative to WhatsApp

1.8kGNU General Public License v3.0Chatdeltachat/deltachat-android

Android

Deltachat

Decentralized private desktop messenger — Decentralized private messenger with chat-shared tools and games for Desktop

alternative to WhatsApp

1.6kGNU General Public License v3.0Chatdeltachat/deltachat-desktop

macOS Windows Linux