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Open-source Chat & Communication

Messaging, email, video calls, forums and social apps. 23 apps.

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Any platform Web Desktop Windows macOS Linux Android iOS CLI Self-hosted Browser extension

Zapfast Chat & Communication
ZapFast: a fast, native WhatsApp client in Rust and egui
1.7kRustMITWindowsmacOSLinux
+296
Mail Chat & Communication
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 100 MB of RAM.
1.3kRustAGPL-3.0WindowsmacOSLinux
+245
Penguin Mail Chat & Communication
Mail and calendar for Linux and macOS. Gmail and IMAP accounts, Google Calendar, contacts, OpenPGP and S/MIME. GTK4 and libadwaita, written in Rust.
347RustGPL-3.0macOSLinuxDesktop
+121
TeleDrive Chat & Communication
Turn a private Telegram channel into your personal cloud drive.
242KotlinApache-2.0WindowsDesktopAndroid
+34
Mailspring Chat & Communication
A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
18kTypeScriptGPL-3.0WindowsmacOSLinux
10y ago
OpenRCT2 Chat & Communicationalt. to RollerCoaster Tycoon 2
An open source re-implementation of RollerCoaster Tycoon 2
16kC++GPL-3.0WindowsLinuxDesktop
12.5y ago
Nchat Chat & Communication
Terminal-based messaging client for Linux and macOS with Telegram, WhatsApp and Signal support
2kC++MITmacOSLinuxDesktop
7.6y ago
Installer Chat & Communication
A simple standalone program which automates the installation, removal and maintenance of BetterDiscord.
1.8kGoMITWindowsmacOSLinux
5.9y ago
Kanmail Chat & Communication
Turn your inbox into a kanban board.
1.4kGoDesktop
8.2y ago
Endcord Chat & Communication
The most feature rich Discord TUI client.
1kPythonDesktopCLI
1.8y ago
Whalebird Desktop Chat & Communication
Single-column Fediverse client for desktop
932TypeScriptGPL-3.0Desktop
8.6y ago
Sieve Chat & Communication
Sieve Script Editor
890JavaScriptAGPL-3.0WindowsLinuxDesktop
14y ago
Cinny Desktop Chat & Communication
Yet another matrix client for desktop
863RustAGPL-3.0WindowsmacOSLinux
4.5y ago
Altus Chat & Communication
Desktop client for WhatsApp Web with themes, notifications and multiple account support
706TypeScriptGPL-3.0Desktop
8.1y ago
Weblink Chat & Communication
Control your desktop from a browser, with P2P chat, file sharing, voice, video, and screen sharing powered by WebRTC.
692TypeScriptMITDesktopWeb
2.2y ago
Overlayed Chat & Communication
A modern, open-source, and free voice chat overlay for Discord that supports Mac, Linux, and Windows
682TypeScriptAGPL-3.0Desktop
2.9y ago
Haven Chat & Communicationalt. to Discord
Self-hosted private chat: no cloud, no telemetry, no Big Tech. Discord alternative that runs on your own machine.
590JavaScriptAGPL-3.0LinuxDesktopSelf-hosted
8mo ago
Robrix Chat & Communication
Robrix: a powerful multi-platform Matrix chat client written in Rust, using the Makepad UI toolkit and Robius platform abstractions
487RustMITWindowsmacOSDesktop
2.9y ago
Kahla Chat & Communication
Kahla is a cross-platform business messaging app. Mirror of https://gitlab.aiursoft.com/aiursoft/kahla
421C#DesktopSelf-hostedWeb
9y ago
Nmail Chat & Communication
Terminal-based email client for Linux and macOS
263C++MITmacOSLinuxDesktop
7.4y ago
Hylki Chat & Communication
Hylki (formerly Vireo): a fast, GNOME-native email client built with Rust and libadwaita.
245RustAGPL-3.0LinuxDesktop
3mo ago
Rpc Anywhere Chat & Communication
Create a type-safe RPC anywhere.
208TypeScriptMITDesktopBrowser extension
2.8y ago
Qtcord Chat & Communication
Qtcord is a Discord client built with Qt aiming to bring a lightweight, native experience.
158PythonMITLinuxDesktop
2.8y ago