Open-source alternatives to WhatsApp

Official Telegram Android app source code — Telegram for Android source

↔ alternative to WhatsApp

Private messenger app for Android. — A private messenger for Android.

↔ alternative to WhatsApp

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

Private messaging app for iOS. — A private messenger for iOS.

↔ alternative to WhatsApp、iMessage

Open source instant messaging and VoIP chat app. — A free and open source instant messaging and VoIP chat app built for friends, groups, and communities.

↔ alternative to WhatsApp

Telegram messenger app for iOS — Telegram-iOS

↔ alternative to WhatsApp

A free IM and video chat application. — 🚀starRTC，即时通讯(IM)系统，免费IM系统（含单聊，群聊，聊天室，文件传输），免费一对一视频聊天，VOIP，语音对讲（回音消除），直播连麦，视频直播，RTSP拉流，RTMP推流，webRTC服务端，在线教育，白板，小班课，在线会议，视频会议，视频监控，局域网直连（无需服务器），兼容webRTC, 支持webRTC加速，P2P高清传输，安卓、iOS、web互通，支持门禁对讲，可视对讲，电视盒子，树莓派，海思，全志，任天堂switch，云游戏，OTT设备，物联网平台，C语言自研方案，支持二次开发成类微信，类映客等APP，✨万水千山总是情，来个star行不行✨，更多示例请访问：

↔ alternative to WhatsApp

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

↔ alternative to WhatsApp

Telegram messenger app for iOS. — Telegram Messenger for iOS

↔ alternative to WhatsApp

Command-line WhatsApp client for sync, search and send. — WhatsApp CLI: sync, search, send

↔ alternative to WhatsApp

Native desktop WhatsApp client. — ZapFast: a fast, native WhatsApp client in Rust and egui

↔ alternative to WhatsApp

Native Mac wrapper for WhatsApp Web. — A native Mac app wrapper for WhatsApp Web

↔ alternative to WhatsApp

Real-time chat app for iOS with Firebase — Real time chat app written in Swift 5 using Firebase

↔ alternative to WhatsApp

Unofficial desktop client for WhatsApp. — WhatsApp desktop application written in PyQt6 + PyQt6-WebEngine.

↔ alternative to WhatsApp

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

↔ alternative to WhatsApp

WhatsApp clone built with Jetpack Compose and Stream Chat. — 📱 WhatsApp clone project demonstrates modern Android development built with Jetpack Compose and Stream Chat/Video SDK for Compose.

↔ alternative to WhatsApp

Unofficial WhatsApp desktop client for Linux. — An unofficial WhatsApp desktop application for Linux.

↔ alternative to WhatsApp