Messaging

Signal offers private messaging, with its site introducing a communication experience centered on privacy.

Proton Meet provides video calls with privacy protections from the creators of Proton Mail, supporting online meetings.

The Altus desktop client packages WhatsApp Web with themes and notifications, providing a desktop interface for messaging.

Jami offers distributed, open-source communication software with end-to-end encryption.

Matrix communication is available through Element, an end-to-end encrypted messenger for interoperable servers.

Rocket.Chat provides real-time messaging, voice, video, AI, and related collaboration tools for organizations.

Matterbridge connects chat platforms including IRC, Slack, Discord, Telegram, Matrix, and Mattermost through message bridges.

A community-maintained list collects Fluxer libraries, utilities, clients, bots, and other projects.

Prose offers an open source alternative to Slack and Teams, with plans and information for large nonprofits and education groups.

Moderate Matrix communities with Mjolnir, a bot that can handle malicious invites, spam, and other server issues.

This community list gathers libraries, bots, clients, and tools for the Stoat chat app.

This guide helps newcomers start chatting with XMPP by explaining how to choose and use compatible clients.

Zulip provides an open-source team chat server and web application for team collaboration and focused discussions.

Privacy Matters compares secure messaging apps by security and privacy features, with a filterable table of services.

Burn My Note creates encrypted notes that self-destruct after reading, with optional password protection and configurable expiration times.

CoyIM provides a security-focused chat client, and its project page cautions that the software has not yet been audited.

The Matrix.org ecosystem page introduces projects built around Matrix, an open protocol for secure decentralized communications.

Damus offers a social network described as user-controlled, with versions listed for iOS, iPad, and Apple silicon Macs.

This page compares instant messaging services and discusses how their approaches to user privacy differ.

Xabber provides open source XMPP chat on Android and the web, including account registration and messaging features.

Ricochet Refresh aims to update the Ricochet project for private and anonymous instant messaging, with its code available as open source.

Briar Desktop is available for download on Linux, Windows, and macOS, with the project site providing operating system links.

Pidgin signs in to accounts on multiple chat networks through a single desktop messaging program.

Use qTox, a free instant messaging application without advertising, to connect with friends and family.