Apps similar to Sideband include Element, which is open source and free for personal use. Other options are Tox, bitchat, SimpleX Chat and Briar. You can choose from more than 10 Instant Messengers like Sideband for Android, Linux, Mac, Windows and iPhone.
Fractal is a Matrix messaging app for GNOME written in Rust. Its interface is optimized for collaboration in large groups, such as free software projects.
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.
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Ratspeak is a native desktop and mobile client for E2EE conversations over Reticulum, a new type of mesh networking. Ratspeak gives you messaging, file/image sharing, voice calls (experimental), LoRa capability, WiFi, BLE, TCP, offline messaging, turn-based games, and more.
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.
MeshCore is a lightweight, portable C++ library that enables multi-hop packet routing for embedded projects using LoRa and other packet radios. It is designed for developers who want to create resilient, decentralized communication networks that work without the internet.
Zerion is a secure messaging app and encrypted vault designed for people who need private, anonymous, censorship-resistant communication.
