Whiteboards, Diagrams & Mind Maps

6 self-hosted open source alternatives in this category

AFFiNE

Local-first workspace for docs, notes, and whiteboards

Local-first, open-source workspace combining docs, wikis, and whiteboards with real-time collaboration and optional self-hosted cloud sync.

Alternative to:

Notion+4

Penpot

Open design and prototyping for teams

43.6k

2.4k

Last commit: 1d ago

Web-based UI/UX design and prototyping tool for real-time collaboration, SVG-first editing, and developer-friendly handoff.

Alternative to:

Figma+3

ChartDB

Database schema diagrams from your SQL databases

20.8k

1.2k

Last commit: 2d ago

ChartDB generates interactive ER diagrams by introspecting your SQL database schema, helping teams document, explore, and share table relationships and metadata.

Alternative to:

dbdiagram.io+3

BigBlueButton

Virtual classroom web conferencing for online learning

Last commit: 1d ago

Open-source virtual classroom for web conferencing with whiteboard, screen sharing, breakout rooms, recordings, and LMS integrations.

Alternative to:

Zoom+7

CryptPad

End-to-end encrypted collaborative documents and storage

7.2k

791

Last commit: 2mo ago

Privacy-focused collaborative office suite with end-to-end encryption for docs, spreadsheets, forms, and file storage.

Alternative to:

Google Workspace+9

draw.io (diagrams.net)

Diagramming and flowchart editor for teams and documentation

3.3k

583

Last commit: 1d ago

diagrams.net (draw.io) is a web-based diagramming tool for flowcharts, UML, ER diagrams, and more, with integrations and offline/desktop options.

Alternative to:

Miro+7