Xabber is described as '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' and is a popular instant messenger in the social & communications category. There are more than 100 alternatives to Xabber for a variety of platforms, including Android, iPhone, Windows, Mac and Linux apps. The best Xabber alternative is Signal, which is both free and Open Source. Other great apps like Xabber are Telegram, Element, Matrix and Pidgin.
SafeSwiss The world’s most effective end to end encryption security solution including P2P Voice, encrypted email, encrypted storage, ephemeral text chat, docs share & group chat for mobile phone devices and PC's.
Monal is an open source iOS and macOS XMPP Chat-Client. It can connect to any standard XMPP chat server such as Gtalk or Facebook chat.
This project won the first prize 🥇 at Telegram Lightweight Client Contest and now is an official Telegram client available to anyone at web.telegram.org/a.
Converse is a messaging app for decentralized, secure, end-to-end encrypted conversations. Built on the XMTP network, Converse lets you own your conversations and take them anywhere whenever you want, ensuring your most important messages—the ones you never want to lose or be...
Swift is an elegant, secure, adaptable and intuitive XMPP client, with features that make it suitable for a wide range of use scenarios.
monocles chat is a fork of blabber.im and Conversations with some changes, to improve usability.
Kontalk is a secure instant messenger, allowing you to send and receive text, image and voice messages (other file types coming soon) to and from other Kontalk users completely free of charge.
Tencent QQ, generally referred to as QQ, is the most popular free instant messaging computer program in Mainland China, and has over 856.2 million users. In April 2010, QQ.com ranked 10th overall in Alexas internet rankings.
Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.
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