Open Source Team Collaboration Tools

On-premises file sync, universal access, integrated collaboration, real-time communication with privacy and data control focus.

Open-source suite for editing documents, spreadsheets, presentations, forms, and PDF files with co-editing modes, plugin support, AI assistant, and integration across 40+ platforms.

AppFlowy is an open source alternative to Notion. You are in charge of your data and customizations.

Stoat (previously Revolt) is a chat platform that puts users first. With text & voice channels, video calling, screen sharing, permissions, mod tools, bots & more. Join any community or build one just the way you like it. It also respects your privacy.

CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.

End-to-end encrypted online spreadsheets enabling secure, real-time collaboration, access management, automatic calculations, and cross-device sharing for team data analysis.

The open source Trello alternative.

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.

Wekan, formerly LibreBoard, is an open-source and collaborative Trello -like kanban board application.

Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.

Habitica is a free habit building and productivity app that treats your real life like a game. With in-game rewards and punishments to motivate you and a strong social network to inspire you, Habitica can help you achieve your goals to become healthy, hard-working, and happy.

Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.

Zulip is the only modern team chat app that is designed for both live and asynchronous conversations. Zulip topics create a separate space for each discussion, so different conversations will never get in each other's way.

Seafile is an open-source file management and collaboration platform that goes beyond sync and share, offering extensible metadata, multi-level tagging, flexible file views, and AI-powered organization for smarter teamwork.

A collaborative note-taking, wiki, and documentation platform that scales. Built with Django and React. Open source alternative to Notion, Confluence, or Outline.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Open source software offering project timelines, issue tracking, and document management with robust security and flexible management options.

Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

An open source project management platform focused on simplicity and efficiency. Self-host it, customize it, make it yours. Everything you need to manage projects. Powerful features to help your team succeed.

Mimiri Notes provides a safe place to store your notes, passwords, and confidential data with strong encryption and real-time synchronization across all your devices.

XWiki is the ultimate open-source structured wiki designed to enhance business collaboration and efficiency. Tailored for tech-savvy professionals, XWiki’s extensibility, customization, and flexibility make it indispensable for managing large projects and datasets, while...

Open Source JIRA, Linear and Height alternative. Plane helps you track your issues, epics, and product roadmaps in the simplest way possible.

Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time.

Manage projects, streamline marketing and sales, and create your product roadmap in one app.

Create your own spaces, on your own terms. The open source virtual canvas platform for chatting, collaborating, and playing.