Stack Sketch vs Excalidraw
Excalidraw is the closest tool to Stack Sketch in spirit: open the page, start drawing, no ceremony. Its hand-drawn aesthetic is genuinely delightful, it's open source, and its collaboration rooms made it the default virtual whiteboard for a lot of engineering teams. The difference is what happens after the sketch.
| Stack Sketch | Excalidraw | |
|---|---|---|
| Real technology icons | 640+ built in, ⌘K search | Community libraries, freeform shapes |
| Structured node/edge graph | Yes — auto-layout, templates, JSON | No — freeform canvas |
| AI diagram generation | Yes — in your browser, your API key | Hosted text-to-diagram features |
| Live share links | Yes — read-only, always current | Session links / file exports |
| Live collaboration rooms | No — share links are read-only | Yes |
| Open source | No — closed-source commercial | Yes |
| Pricing | Free (10 diagrams) · $4.99/mo · $49.99 lifetime | Free (paid Plus tier available) |
Where Excalidraw wins
- Instant and free — no account, open source, self-hostable.
- The hand-drawn look is perfect for informal thinking and interviews.
- Live collaboration rooms with multiple cursors.
- A huge community and ecosystem of libraries and integrations.
Where Stack Sketch wins
Excalidraw gives you freeform strokes; Stack Sketch gives you a structured graph. Nodes are real technologies with real logos, edges are typed connections — which is what makes auto-layout, templates, JSON export/import and AI generation into the graph possible. A sketch becomes documentation instead of a whiteboard photo.
Both tools respect the "just start drawing" instinct — our sandbox at /demo needs no account either. But when the diagram needs to live somewhere — pinned in a runbook, embedded in a wiki, kept current as the stack evolves — a live share link to a structured diagram beats a PNG of handwriting.
The honest verdict
Choose Excalidraw for whiteboarding, workshops and thinking out loud. Choose Stack Sketch when the drawing is meant to become living architecture documentation.