Excalidraw
Excalidraw · Design & prototyping
Open-source virtual whiteboard for hand-drawn-style diagrams with live collaboration, embeddable as a React component, plus a hosted Excalidraw+ service
MITOpen sourceFreeLocalSelf-hostedNov 2, 2026
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Gitea
Gitea Ltd. / Gitea community · Version control & code hosting
Lightweight self-hosted Git forge written in Go with repositories, pull requests, issues, packages and GitHub-compatible Actions, deployable as a single binary
MITOpen sourceFreeSelf-hostedNov 2, 2026
Overleaf
Overleaf (Digital Science) · LaTeX & typesetting
Collaborative online LaTeX editor with real-time co-editing, templates and reference-manager sync, available as a hosted service and an AGPL self-hosted edition
AGPL-3.0-onlyFreemiumPaidSelf-hostedNov 2, 2026
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