Open Source Collaboration Apps
Discover the best open source collaboration tools for developers and teams. Enhance productivity, streamline workflows, & manage projects effectively.
Apps in Collaboration
Language
License
Element Web
Collaboration · Team Chat
A polished, self-hostable Matrix client for secure, decentralized messaging and collaboration that puts your organization in full control of its data.
Jitsi Meet
Collaboration · Team Chat · Video Conferencing
Open-source, end-to-end encrypted video conferencing you can self-host or embed into any web or mobile app.
Mattermost
Collaboration · Devops · Team Chat
Open core, self-hosted team collaboration with chat, AI agents, voice calling, and deep DevOps integrations — all under your control.
OpenProject
Collaboration · Productivity · Project Management
The open source project management platform that unifies Gantt charts, agile boards, time tracking, and team collaboration under full self-hosted control.
Nextcloud Server
Collaboration · File Storage
Your own private cloud: self-hosted file sync, collaboration, and communication with no vendor lock-in.
Zed
Code Editors · Collaboration · Developer Tools
High-performance, multiplayer code editor built in Rust by the creators of Atom and Tree-sitter, with native AI integration and real-time collaboration.
Wire
Collaboration · Team Chat · Video Conferencing
Open source end-to-end encrypted messaging for teams and enterprises — self-host for complete control over your communications and data.
Outline
Collaboration · Knowledge Management
A fast, real-time collaborative knowledge base for growing teams built on React, Node.js, and ProseMirror.
Twake Drive
Collaboration · File Storage
Open-source, self-hosted file manager with collaborative drives, AI-powered summarization, and OnlyOffice document editing for teams who want full data sovereignty.
AFFiNE
Collaboration · Note Taking · Productivity
Write, draw, and plan in one infinite canvas — the open-source alternative to Notion and Miro that keeps your data yours.
Leantime
Collaboration · Productivity · Project Management
Project management built for ADHD, autism, and dyslexia — simple as Trello, powerful as Jira
anytype-ts
Collaboration · Knowledge Management · Note Taking
A local-first, end-to-end encrypted knowledge OS that lets you build notes, tasks, wikis, and entire apps — with your data stored offline and synced peer-to-peer.
Plane
Collaboration · Productivity · Project Management
Open-source project management platform to replace Jira, Linear, and ClickUp — with built-in cycles, real-time collaborative docs, and full self-hosting.
Stalwart
Collaboration
All-in-one secure mail and collaboration server covering IMAP, JMAP, SMTP, CalDAV, CardDAV, and WebDAV in a single memory-safe Rust binary.
Twake Chat
Collaboration · Team Chat
Open-source Flutter Matrix client with federated identity lookup, Vodozemac E2EE, and enterprise white-labeling for decentralized team communication.
About Collaboration
Collaboration software is designed to facilitate teamwork and communication, allowing multiple users to contribute to projects simultaneously. These applications move beyond simple file sharing by providing environments where teams can co-create, discuss ideas, and manage workflows in a unified space.
Typical features include real-time document editing, shared calendars and task management, integrated communication channels (like chat and video conferencing), version control for files and projects, and permission-based access controls. Advanced systems also offer features like project boards (Kanban or similar), automated notifications, and integration with other developer tools.
The value proposition of this category is significant. Collaboration platforms solve problems related to information silos, inefficient communication, and difficulty coordinating tasks. They improve project visibility, streamline decision-making processes, reduce redundant work, and ultimately boost team productivity. For developers specifically, these tools enable more effective code reviews, shared documentation creation, and seamless project management – vital for delivering successful software projects.
