E
Excalidraw
free
Trending
Free, open-source virtual whiteboard for sketching hand-drawn-like diagrams. Simple, collaborative, and privacy-focused with end-to-end encryption.
DiagrammingWhiteboard & Brainstorming
Best Diagramming in 2026
5 tools available
Flowcharts, wireframes, architecture diagrams, and visual planning tools
Browse and compare the top diagramming tools. Popular options include Excalidraw, Eraser, Lucidchart, Draw.io, Whimsical, and more. Each tool page includes curated alternatives with honest comparisons and pricing breakdowns. Use the filters below to narrow by pricing model.
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E
Eraser
freemium
Trending
Technical design tool for engineering teams. Features diagrams-as-code, whiteboard, and docs in a single workspace. Supports architecture diagrams, sequence diagrams, and ERDs.
Developer ToolsDiagramming
L
Lucidchart
freemium
Web-based diagramming application for flowcharts, org charts, network diagrams, and UML. Features collaboration, data linking, and integration with major productivity suites.
Diagramming
D
Draw.io
free
Free, open-source diagramming tool for creating flowcharts, network diagrams, UML, and more. Browser-based with offline support and integration with cloud storage.
Diagramming
W
Whimsical
freemium
Visual workspace for thinking and collaboration. Features flowcharts, wireframes, mind maps, sticky notes, and docs in a unified and beautiful interface.
DiagrammingWhiteboard & Brainstorming