Open Source Collaboration Apps

Write, draw, and plan in one infinite canvas — the open-source alternative to Notion and Miro that keeps your data yours.

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.

The open-source AI workspace that puts your data, your rules — with local LLMs, CRDT collaboration, and full self-hosting built in.

Self-hosted, single-tenant group chat with real-time rooms, direct messages, Web Push, and file sharing — no subscriptions, no external services.

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.

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.

A polished, self-hostable Matrix client for secure, decentralized messaging and collaboration that puts your organization in full control of its data.

Self-hosted, open source project management with Kanban, table, gallery, and calendar views — a privacy-first alternative to Trello, Notion, and Asana.

Open-source all-in-one workspace that replaces Linear, Jira, Slack, and Notion for product and engineering teams.

Open-source, end-to-end encrypted video conferencing you can self-host or embed into any web or mobile app.

Project management built for ADHD, autism, and dyslexia — simple as Trello, powerful as Jira

Self-hosted, open-source project management with tasks, calendars, docs, and real-time team collaboration.

Open core, self-hosted team collaboration with chat, AI agents, voice calling, and deep DevOps integrations — all under your control.

The open source project management platform that unifies Gantt charts, agile boards, time tracking, and team collaboration under full self-hosted control.

The open source company operating system that unifies OKRs, projects, and team execution with built-in accountability cadences.

A fast, real-time collaborative knowledge base for growing teams built on React, Node.js, and ProseMirror.

Open-source, real-time collaborative LaTeX editor with sandboxed compilation and full TeXLive support for self-hosted academic and research teams.

A browser-based whiteboard that doubles as a full development environment, letting you draw and code in the same canvas.

Open-source project management platform to replace Jira, Linear, and ClickUp — with built-in cycles, real-time collaborative docs, and full self-hosting.

Your own private cloud: self-hosted file sync, collaboration, and communication with no vendor lock-in.

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.

One file manager for all your devices and clouds — powered by a Virtual Distributed File System built in Rust.

All-in-one secure mail and collaboration server covering IMAP, JMAP, SMTP, CalDAV, CardDAV, and WebDAV in a single memory-safe Rust binary.

Open-source Flutter Matrix client with federated identity lookup, Vodozemac E2EE, and enterprise white-labeling for decentralized team communication.

Open-source, self-hosted file manager with collaborative drives, AI-powered summarization, and OnlyOffice document editing for teams who want full data sovereignty.

A modern, self-hosted wiki platform built on Node.js with a rich plugin ecosystem for authentication, search, storage, and rendering that adapts to any team's infrastructure.

Open source end-to-end encrypted messaging for teams and enterprises — self-host for complete control over your communications and data.

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.

High-performance, multiplayer code editor built in Rust by the creators of Atom and Tree-sitter, with native AI integration and real-time collaboration.