very good whiteboard SDK / infinite canvas SDK
The communications platform that puts data protection first.
☁️ Nextcloud server, a safe home for all your data
Etherpad: A modern really-real-time collaborative document editor.
best way to save what you love
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Virtual whiteboard for sketching hand-drawn like diagrams
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
⚡️⚡️⚡️ Self-hosted collaborative bookmark manager to collect, read, annotate, and fully preserve what matters, all in one place.
Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
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.
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots
Markdown note-taking web application designed for simplicity
Library for building distributed, real-time collaborative web applications
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
tine groupware main repository
