Quick comparison
| Feature | FlowSimp | Excalidraw |
|---|---|---|
| Look | Clean flowchart shapes | Hand-drawn whiteboard |
| License of the editor | Hosted at flowsimp.com | Open source |
| Start drawing | Completely free to use — no sign-up required | Browser editor, no account required for a local drawing |
| Mermaid flowcharts | Paste flowchart or graph syntax | Not a flowchart importer |
| Best at | Process flows and decision trees | Sketchy diagrams and architecture notes |
Pick FlowSimp when
The diagram is a process: start, steps, decisions, and an end. Templates such as the algorithm flowchart open as editable boards.
Ready to draw?
No signup. Opens instantly in your browser.
Pick Excalidraw when
You want the sketch style, you prefer an open-source whiteboard, or the drawing is an architecture doodle rather than a formal flowchart.