Open Source Collaboration & Communication Software
Collaboration & Communication software provides shared environments for real-time messaging, video conferencing, and joint document editing. These tools centralize team chat history, project notes, and digital whiteboards to prevent information from being scattered across different platforms. This type of software serves organizations and teams that need to manage internal discussions and shared knowledge bases. Self-hosting these apps ensures that sensitive company conversations and private project files remain on internal servers rather than on external corporate clouds.
This page lists 94 open source tools in the Collaboration & Communication category. The most popular are Excalidraw, AppFlowy and Affine. Most use the AGPL-3.0 or Apache-2.0 license, and 74 offer an official Docker image.
nheko
A native desktop client for the Matrix protocol designed to feel like a mainstream chat application.
Dorion
A lightweight Discord client designed for low spec hardware with support for themes and plugins.
WebCord
A privacy focused desktop client for Discord and SpaceBar that avoids using the official Discord API.
Tuwunel
A high performance Matrix homeserver written in Rust for scalable and low cost communication infrastructure.
Chitchatter
A decentralized peer to peer communication tool providing encrypted chat, video conferencing, and ephemeral file sharing.
Mattermost
Provides a native desktop interface for secure team collaboration and communication across Windows, Mac, and Linux.
SOGo
A collaboration suite providing webmail, calendaring, and address book management with support for open standards.
ZNC
An IRC bouncer that keeps users connected to networks and buffers messages while offline.
Vrite
A collaborative developer content platform for creating and deploying product documentation, technical blogs, and internal knowledge bases.
UnInbox
Manage team communication through shared inboxes, conversation notes, and a sender screener for organized email workflows.
MongooseIM
An XMPP server designed for large installations that supports clustering and multiple client connection methods.
TRIP
A minimalist map tracker and trip planner for visualizing points of interest and organizing travel itineraries.
Sync-in
A self-hosted platform for file storage and synchronization that enables team collaboration and secure document sharing.
HortusFox
Self-hosted collaborative plant management and tracking system for organizing plant collections and care schedules.
Mezon
A communication platform for communities and teams featuring encrypted messaging, voice calls, and AI moderation tools.
Databag
A federated, self-hosted messenger featuring end-to-end encryption and topic-based threads for secure, decentralized communication.
Galene
A self-hosted videoconferencing system designed for easy deployment and moderate server resource consumption on private hardware.
InspIRCd
A high performance Internet Relay Chat server supporting the IRCv3 protocol for various operating systems.
XWiki
A self-hosted wiki platform for structuring and sharing organizational knowledge through collaborative notes and internal documentation.
FusionPBX
A multi-tenant PBX and voice switch for FreeSWITCH providing carrier grade communication and telephony features.
Kiwi IRC
A versatile web based messenger that provides a modern interface for connecting to IRC networks.
Glowing Bear
A modern web frontend for the WeeChat IRC client that enables access via any web browser.
webtrees
A collaborative genealogy application for viewing and editing family trees using standard GEDCOM files.
Quassel IRC
A distributed IRC client that allows multiple graphical interfaces to connect to a central core server.
Davis
A DAV server and admin interface for managing calendars and contacts via CalDAV, CardDAV, and WebDAV.
Apache OpenMeetings
A groupware system providing video conferencing, instant messaging, and collaborative tools for remote team communication.
OpenSlides
A web based system for managing and projecting agendas, motions, and elections during formal assemblies.
ngIRCd
A portable and lightweight Internet Relay Chat server designed for small or private networks.
Ethora
Provide real-time messaging, AI bots, and digital wallet integration through a cross-platform SDK and server.
UnrealIRCd
An advanced open source IRC server with a focus on modularity, security, and extensive configuration options.
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