Whiteboards & Mind Maps
Open-source whiteboard and mind map tools
6 of the 62 whiteboard and mind map tools in this directory are open source, according to their own sites.
All of them are free or have a free plan.
Listings checked up to Nov 12, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| draw.ioFree diagram editor that saves files to storage you choose | Free | Free | Web, macOS, Windows, Linux |
| ExcalidrawOpen-source whiteboard for hand-drawn style sketches and diagrams | Free plan · from $6/mo | Yes | Web |
| FreeplaneFree, open source mind mapping app for the desktop | Free | Free | macOS, Windows, Linux |
| PlantUMLDraw UML and other diagrams from plain-text descriptions | Free | Free | Web, Browser extension |
| OpenBoardFree open-source interactive whiteboard software for classrooms | Free | Free | macOS, Windows, Linux |
| Flowchart FunText-based flowchart maker that draws diagrams as you type | Free plan · from $2/mo | Yes | Web |
Common questions
Which whiteboard and mind map tools are open source?
6 of the 62 whiteboard and mind map tools in this directory are open source, according to their own sites. They are draw.io, Excalidraw, Freeplane, PlantUML, OpenBoard and Flowchart Fun.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.