ChatSecure is described as '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' and is a popular instant messenger in the social & communications category. There are more than 100 alternatives to ChatSecure for a variety of platforms, including Android, iPhone, Windows, Linux and Mac apps. The best ChatSecure alternative is Signal, which is both free and Open Source. Other great apps like ChatSecure are Telegram, Element, Tox and SimpleX Chat.
Secure messenger that protects against NSO Group (Pegasus) & Cytrox (Predator) from exploiting your iOS device via "zero-click" exploit chains. These exploits are easily delivered via other messaging apps like iMessage, Signal, WhatsApp, etc. Protection for those at the highest risk.
SureSpot is an open source encrypted messenger designed to make encrypted messaging simple and accessible to anyone.
A great way to stay in touch with your relatives, by sending both SMS and MMS messages. The app properly handles group messaging too, just like blocking numbers from Android 7+.
Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.
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.
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.
CoyIM is a new chat client that is safe and secure by default: no settings to change, no plugins to install, no computer configuration to change.
Open source anonymous, registration free P2P chat. You communicate directly and no logs are saved on the server. Otr.to is browser based, which means that you don't need to install or ask somebody to install software.
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.
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