XMPP is described as 'Or Extensible Messaging and Presence Protocol, is an open standard for instant messaging and real-time communication, allowing for message exchanges between any two entities on the Internet. It's known for its decentralized and extensible nature' and is a instant messenger in the social & communications category. There are more than 25 alternatives to XMPP for a variety of platforms, including Android, Mac, Windows, iPhone and Web-based apps. The best XMPP alternative is Matrix, which is both free and Open Source. Other great apps like XMPP are Jami, WhatsApp, Conversations and Adium.
The Signal Protocol (formerly known as the TextSecure Protocol) is a non-federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations.
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.
Graph Messenger is an UNOFFICIAL messaging app that uses Telegram's API and add new features like real multi account system, download manager and time line.
With BiP, you can send pictures and videos, documents, audio files, locations as well as text messages. Holding the microphone button is enough to send the audio recording.?
Türkiye
Hype is a chat service built into the Opera Mini browser, so you can chat, share, and browse in one app. And when you find something online worth sharing, Hype makes it easy to do so with WebSnap.
Norway
all-in-one Communication and Collaboration Platform. The NYNJA platform combines the benefits of instant chat, video conferencing, screen sharing, file sharing, asset management collaboration, and much more, in one fast, easy and reliable platform.
United States
This is psyced, a scalable multi-protocol multi-casting chat, messaging and social server solution to build decentralized chat networks upon, released as free software. Powerful, not bloated, not too hard to get into.
HookZApp is a cloud native, secure, fast, and feature-rich Next-Gen communication, collaboration & social media platform that makes everyday life, fun and easy.
Hong Kong SAR China
A simple-to-use messaging app for 1:1 communication and small groups supporting SMS, MMS, matrix and XMPP through libpurple.
United States
If you’re tired of using complicated chat servers with too many features that you don’t use, or if you’re looking for a more intuitive and comprehensive chat platform, then you might want to try a Simple but Advanced Messaging Alternative (SAMA) chat server.
Germany
EU
Tempo is a privacy-focused messaging app designed for secure communication. Features include end-to-end encryption, restrictions on screenshots and screen recordings, and self-destructing messages.
