scli is described as 'A simple terminal user interface for signal messenger (using signal-cli)' and is an app. There are more than 25 alternatives to scli for a variety of platforms, including Android, Linux, Mac, Windows and iPhone apps. The best scli alternative is Signal, which is both free and Open Source. Other great apps like scli are Telegram, Element, Matrix and Tox.
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.
µTox is the lightweight client with minimal dependencies; it not only looks pretty, it runs fast! µTox is available for Windows, OS X, and Linux (Android support is experimental), with full support for chat, file transfers, audio/video calling, and desktop sharing...
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.
Ricochet Refresh is the new updated version of Ricochet, supported by Blueprint for Free Speech.. We are a non-government, not-for-profit organisation working to safeguard the freedom of expression for whistleblowers, activists, and everybody else, worldwide.
Flare is an unofficial app that lets you chat with your friends on Signal from Linux. It is still in development and doesn't include as many features as the official Signal applications.
Antox is an Android client for Tox. It aims to bring the full multimedia support Tox offers to your device, although it's still currently in heavy development.
signal-cli is a commandline interface for the Signal messenger. It supports registering, verifying, sending and receiving messages. signal-cli uses a patched libsignal-service-java, extracted from the Signal-Android source code.
Tinfoil Chat (TFC) is a FOSS+FHD peer-to-peer messaging system that relies on high assurance hardware architecture to protect users from passive collection, MITM attacks and most importantly, remote key exfiltration.
WireMin is a decentralized network built by the people, for the people, and of the people. Enjoy full privacy and security with end-to-end encryption on a network without central servers. Your data stays under your control—free from censorship, surveillance, and exploitation.
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