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
Docmost
CMS · Collaboration · Note Taking
Self-hosted collaborative wiki and knowledge base with real-time editing, diagrams, AI assistance, and enterprise access controls — a modern alternative to Confluence and Notion.
Twake Chat
Collaboration · Team Chat
Open-source Flutter Matrix client with federated identity lookup, Vodozemac E2EE, and enterprise white-labeling for decentralized team communication.
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.
Alexandrie
Collaboration · Knowledge Management · Note Taking
The open-source, offline-first Notion, Obsidian & Confluence alternative with multi-tenant teams, OIDC/SSO, and one-command Docker deployment.
Worklenz
Collaboration · Product Management · Project Management
All-in-one open source project management for teams who want full control — plan projects, track tasks, manage resources, and monitor finances without the SaaS lock-in.
Campfire
Collaboration · File Storage · Team Chat
Self-hosted, single-tenant group chat with real-time rooms, direct messages, Web Push, and file sharing — no subscriptions, no external services.
Operately
AI Assistants · Collaboration · Productivity
The open source company operating system that unifies OKRs, projects, and team execution with built-in accountability cadences.
overleaf
Collaboration · Productivity
Open-source, real-time collaborative LaTeX editor with sandboxed compilation and full TeXLive support for self-hosted academic and research teams.
Spacedrive
Collaboration · File Storage
One file manager for all your devices and clouds — powered by a Virtual Distributed File System built in Rust.
AppFlowy
AI Assistants · Collaboration · Productivity
The open-source AI workspace that puts your data, your rules — with local LLMs, CRDT collaboration, and full self-hosting built in.
Focalboard
Collaboration · Productivity · Project Management
Self-hosted, open source project management with Kanban, table, gallery, and calendar views — a privacy-first alternative to Trello, Notion, and Asana.
Colanode
Collaboration · Knowledge Management · Team Chat
Local-first, self-hosted workspace that combines real-time chat, Notion-style pages, and structured databases — all synced via CRDTs so you work offline without losing a keystroke.
squad
AI Agents · Collaboration · Developer Tools
A daemonless Rust CLI that lets multiple AI coding agents collaborate across terminals through a shared SQLite database instead of a server.
Snapify
Collaboration · Productivity
Open-source, self-hostable screen recording and video sharing built as a Loom alternative — no accounts required to watch, full S3-backed storage for your data.
pad.ws
Collaboration · Design Tools
A browser-based whiteboard that doubles as a full development environment, letting you draw and code in the same canvas.
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.
