Nekogram is an open-source third-party Telegram client with not many but useful mods.



The best open source alternative to Telegram is Signal. If that doesn't suit you, our users have ranked more than 100 alternatives to Telegram and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Telegram are Element, Tox, Wire and Matrix.
Nekogram is an open-source third-party Telegram client with not many but useful mods.



Cwtch - (a Welsh word roughly translating to “a hug that creates a safe place”) is a decentralized, privacy-preserving, multi-party messaging protocol that can be used to build metadata resistant applications.


Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE.




Off-the-Record (OTR) Messaging allows you to have private conversations over any instant messaging (MSN,Gtalk, Facebook and so on) by providing encryption, authentication, deniability, perfect forward...

Quaternion is a cross-platform Qt5-based desktop IM client for Matrix, a reference desktop application using libQMatrixClient. Source code, issue tracker, roadmap etc. can be found at GitHub. Releases (with links to cross-platform source code archives, as well as binaries for...


Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

The motivation behind the project is to provide a native desktop app for Matrix that feels more like a mainstream chat app (Element, Telegram etc) and less like an IRC client.




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.




Telegram Desktop fork with Material Design and other improvements, which is based on the Telegram API and the MTProto secure protocol.


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).







OTR is a chat protocol and not a specific app.