Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
☁️ Nextcloud server, a safe home for all your data
best way to save what you love
⚡️⚡️⚡️ Self-hosted collaborative bookmark manager to collect, organize, and preserve webpages, articles, and documents.
very good whiteboard SDK / infinite canvas SDK
Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
Etherpad: A modern really-real-time collaborative document editor.
Virtual whiteboard for sketching hand-drawn like diagrams
Library for building distributed, real-time collaborative web applications
The communications platform that puts data protection first.
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, and macOS
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
json-joy is a library that implements cutting-edge real-time and collaborative editing algorithms and utilities for JSON data models, with a focus on developing the JSON CRDT (Conflict-free Replicated Data Type) specification and implementation.
tine groupware main repository
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots
