Port Messenger is described as 'Port is a free, open source, privacy-first messaging app designed for the hyper-connected world. Connect safely without sharing phone numbers, emails, or usernames. With Port, yoOR USERNAMEu can chat, call, share, and stay in touch on your own terms' and is a instant messenger in the social & communications category. There are more than 25 alternatives to Port Messenger for a variety of platforms, including Android, Mac, Linux, Windows and iPhone apps. The best Port Messenger alternative is Signal, which is both free and Open Source. Other great apps like Port Messenger are Telegram, Element, Matrix and Jitsi Meet.
LINE is transforming the way people communicate, closing the distance between family, friends, and loved ones for free.
ChatSecure is a 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.
Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind. Using GTK+/Vala.
Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.
Speek! is the first messenger that is anonymous and censorship-resistant by design. Speek! messenger encrypts all messages and is secure, private and decentralized.
qTox - The most feature-rich Tox client; P2P instant messaging, audio and video calls.
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.
Selene is a comprehensive peer-to-peer chat and file sharing application built on the Tor network. It enables secure, private communication and seamless file transfers between users, leveraging the anonymity and resilience of Tor.
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