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Virtual whiteboard for sketching hand-drawn like diagrams

whiteboard SDK / infinite canvas SDK

The communications platform that puts data protection first.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

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

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Shared data types for building collaborative software

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

Etherpad: A modern really-real-time collaborative document editor.

??????Self-hosted collaborative bookmark manager to collect, organize, and preserve webpages, articles, and documents.