Cost / License
- Free
- Open Source
Application typeApplication types
Platforms
- Mac
- Windows
- Linux




WhatsApp is described as 'Free messaging without SMS fees, web sync, and multimedia sharing, supporting group and video chats, available on iPhone, Android, and desktop' and is a leading instant messenger in the social & communications category. There are more than 100 alternatives to WhatsApp for a variety of platforms, including Android, iPhone, Windows, iPad and Web-based apps. The best WhatsApp alternative is Signal, which is both free and Open Source. Other great apps like WhatsApp are Telegram, Wire, Tox and Element.




WhatsApp, native and fast. ZapFast is a WhatsApp client written in Rust with egui. It uses whatsapp-rust for the WhatsApp Web protocol. It runs on Linux, macOS, and Windows, links to your phone as a companion device, and has no browser engine.



Pure instant messaging — simple, fast, secure, and synced across all your devices. One of the top 5 most downloaded apps in the world with over 1 billion active users.



Plus Messenger is an messaging app that uses Telegram 's API. Plus Messenger has all of Telegram's features plus themes. Plus Messenger is free for android devices.



ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.



The goal of Gajim is to provide a full featured and easy to use XMPP client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU General Public License.




Secure communication for individuals, teams, and large organizations.



Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).





Open source Jabber (XMPP) client with multi-account support, clean and simple interface. Being both free (as in freedom!) and ad-free, Xabber is designed to be the best Jabber client for Android .



Kik is way more than just messaging. It’s the easiest way to connect with your friends, stay in the loop, and explore – all through chat. No phone numbers, just pick a username.



KakaoTalk is a phone number based messenger service that allows users anywhere in the world to chat one-to-one or in a group for free. (no SMS service)



