drawnix

A whiteboard app for sketching diagrams, mind maps, and freeform notes, runs in the browser, stores everything locally. If you've used Excalidraw and wished it had a few more structured drawing tools (tables, mind map layouts, flowcharts with auto-routing), drawnix is that.

Built on a canvas framework called Plait, which handles the rendering. The result feels snappy. You get shapes, connectors, freehand drawing, text, and a mind map mode that auto-lays-out nodes. Everything exports to PNG or SVG.

Free to use at drawnix.com. Self-hosting is also free: it's MIT licensed, clone and run. The pricing page mentions a Pro tier but as of now, the free version has no meaningful restrictions, on GitHub and, which is solid for a drawing tool.

The catch: it's newer than Excalidraw and tldraw, with a smaller ecosystem. No real-time collaboration yet (that's the obvious Pro feature coming). Plugin support is limited. If you need multiplayer whiteboarding today, Excalidraw with its collaboration server or tldraw are more mature. But for solo diagramming with a clean UI, drawnix is worth a look.