Diagramming
Best Diagramming Software 2025
Create diagrams, flowcharts, and wireframes.
1
Excalidraw
Hand-drawn diagrams.
4.7(3,200)
Free
WhiteboardHand-drawnCollaborationLibrariesExportEnd-to-end encryption
Hand-drawn style
Free
Private
Not for formal
Basic shapes
Best for: Informal diagramsVisit Site
2
draw.io
Free diagramming tool.
4.6(8,200)
Free
FlowchartsUMLNetworkCloud storageDesktopEmbed
Completely free
Full featured
Privacy
Basic collaboration
Less templates
Best for: Free diagrammingVisit Site
3
Lucidchart
Professional diagramming.
4.5(5,800)
Free
FlowchartsOrg chartsERDsNetworkCollaborationIntegrations
Professional
Many templates
Collaboration
Expensive teams
Limited free
Best for: Business diagramsVisit Site
4
Microsoft Visio
Microsoft diagramming.
4.2(5,800)
$5/mo
Professional diagramsStencilsData linkingCollaborationTemplatesIntegration
Enterprise standard
Data linking
Microsoft
Expensive
Complex
Windows focused
Best for: EnterpriseVisit Site