Open source collaboration projects

Collaborative whiteboard with a hand-drawn aesthetic

Free instant whiteboard with real-time collaboration

Self-hosted team messaging with voice, video, and AI

best way to save what you love

Secure collaboration platform for mission-critical work

Secure cloud collaboration platform for organizations

Organized team chat for distributed teams

Univer is a full-stack framework for creating and editing spreadsheets / word processor / presentation on both web and server.

Collaborative bookmark manager for teams and individuals

Etherpad: A modern really-real-time collaborative document editor.

开源白板工具（SaaS），一体化白板，包含思维导图、流程图、自由画等。All in one open-source whiteboard tool with mind, flowchart, freehand and etc.

Feature flags for rapid, risk-free software deployment

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Self-hosted Kanban board with real-time collaboration

Design editor that opens Figma files, runs AI, and stays local

A complete web conferencing system for virtual classes and more!

Secure collaboration with end-to-end encryption

HedgeDoc - Ideas grow better together

Complete office suite for documents, spreadsheets & more

Open Source Vulnerability Management Platform

🧩 Content editing tech stack for the web - BlockSuite is a toolkit for building editors and collaborative applications.

PartyKit simplifies developing multiplayer applications

Open-source office suite pack that comprises all the tools you need to work with documents, spreadsheets, presentations, PDFs, and PDF forms on Windows, Linux,

Share and collaborate by syncing with any Git repository instantly. Linux, macOS, and Windows

Library for building distributed, real-time collaborative web applications

🚀 Open-source, self-hosted P2P WebRTC video conferencing for fast, private real-time communication. Create browser-based meeting rooms with no downloads or tim

Wireflow - user flow chart real-time collaborative tool

TerminusDB is a distributed, collaborative database designed for building, sharing, versioning, and reasoning on structured data.

Free open source office suite with business productivity tools: document and project management, CRM, mail aggregator.

🏆 Self-hosted, open-source WebRTC video conferencing platform for real-time communication and collaboration. A modern alternative to Zoom, Google Meet, Jitsi M

An XMPP server licensed under the Open Source Apache License.

Pentest Report Generator

Serverless team chat over Tor, no phone number needed

Modern Confluence alternative designed for internal & external docs, built with Go + EmberJS

A simple and beautiful wiki for teams

Collaborative content creation for technical teams

Peer-to-peer, editor-agnostic collaborative editing of local text files.

Open-source file storage with complete data sovereignty

Twake is a secure open source collaboration platform to improve organizational productivity.

General purpose plain text editor for macOS. Widely known for its live collaboration feature.

Textbus 是一个组件化的、数据驱动的富文本框架，支持在线协同编辑，拥有非常好的扩展性和可定制性，可使用 Viewfly、Vue 或 React 直接渲染富文本，是构建复杂富文本的不二之选！

Free4Chat provides the temporary boundary. Participants bring the capabilities.

A private Lumina server for IDA Pro

🐙 The Go backend powering OCTO — an open workplace built for humans × AI agents. REST & WebSocket APIs, Lobster (AI agent) orchestration, and WuKongIM real-tim

a collaborative knowledge-exchange platform in Rails; we welcome first-time contributors! :balloon:

Dradis Framework: Collaboration and reporting for IT Security teams

The AI Org-OS — a collaborative platform for humans and agents. Explore: https://spaces.xyne.ai

Multiplayer sessions for Claude Code. Share a link, work together live, and review the same replies, tools and previews.

A reversing plugin for cross-decompiler collaboration, built on git.

Straightforward realtime kanban boards management for intuitive task tracking. 4ga Boards features an elegant dark mode, collapsible todo lists, and multitaskin

excalidraw with collaboration feature, self-hosting, and only one-click deploy

Python Exploitation Framework, V8 Engine Debugger, Proxy interceptor, marketplace, post-exploitation, backdoor generator,....

A modern, feature-rich, databaseless flat-file wiki platform built with Go.

Cross-platform real-time collaboration client optimized for business and organizations.

LinShare - Secure File Sharing

Effortlessly self-host whiteboards. High-performance, cross-platform digital whiteboard with live collaboration built in Rust & WebGPU. Zero subscription, AGPLv

Open Source Discussions Platform for Remote Teams

Simplify project management for developers

Free, open-source alternative to ChatGPT Spaces: a self-hostable AI workspace for shared pages and conversations.