Editor's pick Open source No sign-up
Excalidraw
Diagrams with a hand-drawn look.
What it is
An open source whiteboard whose imperfect strokes invite discussion of the idea rather than the pixel. It saves locally, exports to SVG or PNG, supports end-to-end encrypted collaborative rooms and needs no account.
Best for
Explaining an architecture in a README or an issue.
What the free plan includes
- No sign-up for individual use
- Real-time collaboration at no cost
- Optional Plus for libraries and team spaces
Free plans change often. Confirm the limits on the official page before deciding.
