Best Diagramming Software in 2026
Updated
43 diagramming software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
43ranked
3free plans on this page
$3/molowest paid tier
4 Oct 2026last checked
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 26 SAP Signavio Process Modeler No phone app RecognisedPhone appDocumentedFree plan 6.2 Diagram types: BPMN 2.0; value chains; DMN
- 27 ConceptDraw DIAGRAM No phone app RecognisedPhone appDocumentedFree plan 6.2$199/mo Diagram types: flowcharts, block diagrams, process diagrams, UML diagrams, organizational charts, network diagrams, rack diagrams, cloud service architecture diagrams, technical schematics, building plans, floor plans, dashboards, infographics, presentations
- 28 StarUML No phone app RecognisedPhone appDocumentedFree plan 6.2$129/mo Real-time collaboration: YesDiagram types: UML 2, entity-relationship, data flow, flowchart, mindmap, C4, SysML, BPMN, UI wireframe, AWS architecture, GCP architecture, Azure architecture
- 29 ARIS No phone app RecognisedPhone appDocumentedFree plan 6.2
- 30 Vexlio No phone app RecognisedPhone appDocumentedFree plan 6.2Free Diagram types: flowcharts, UML diagrams, block diagrams, state machine diagrams, software architecture diagrams, math diagrams
- 31 Mermaid No phone app RecognisedPhone appDocumentedFree plan 6.0 Diagram types: flowchart, sequence diagram, class diagram, state diagram, Gantt chart, timeline, mindmap, Git graph, use case diagram, event modeling diagram
- 32 D2 No phone app RecognisedPhone appDocumentedFree plan 5.9 Diagram types: software architecture diagrams; UML class diagrams; sequence diagrams
- 33 CloudSkew No phone app RecognisedPhone appDocumentedFree plan 5.9Free Real-time collaboration: NoDiagram types: cloud architecture diagrams, network diagrams, flowchartsDesktop apps: No
- 34 Preceden No phone app RecognisedPhone appDocumentedFree plan 5.9$10/mo Real-time collaboration: NoDiagram types: timelines, Gantt charts, project roadmaps, legal chronologies, comparative timelines
- 35 Hava No phone app RecognisedPhone appDocumentedFree plan 5.8$59/mo Diagram types: Infrastructure, security group, list, container, hybrid cloud
- 36 MyDraw No phone app RecognisedPhone appDocumentedFree plan 5.7$3/mo Diagram types: flowcharts, organizational charts, family tree diagrams, cross-functional diagrams, cause-and-effect diagrams, data flow diagrams, mind maps, SDL diagrams, Venn diagrams, workflow diagramsDesktop apps: Yes
- 37 Sparx Enterprise Architect No phone app RecognisedPhone appDocumentedFree plan 5.3 Real-time collaboration: YesDiagram types: UML Use Case, Activity, State, Interaction Overview, Sequence, Communication, Package, Class, Object, Composite, Component, Deployment; BPMN; SysML
- 38 Dia No phone app RecognisedPhone appDocumentedFree plan 5.2 Diagram types: Entity-relationship diagrams; UML diagrams; flowcharts; network diagrams
- 39 ThinkComposer No phone app RecognisedPhone appDocumentedFree plan 5.2 Diagram types: concept maps, mind maps, flowcharts, use case diagrams, class diagrams, sequence diagrams, timelines, data models, organizational charts, business models, genealogy treesDesktop apps: Yes
- 40 Graphviz No phone app RecognisedPhone appDocumentedFree plan 5.1 Diagram types: graph diagrams; network diagrams; hierarchical diagrams
- 41 Pencil Project No phone app RecognisedPhone appDocumentedFree plan 5.1 Diagram types: GUI mockups, wireframes, flowcharts, desktop UI, web UI, Android UI, iOS UI
- 42 UMLet No phone app RecognisedPhone appDocumentedFree plan 5.1 Diagram types: class, use case, sequence, state, deployment, activityDesktop apps: Yes
- 43 Diagramo No phone app RecognisedPhone appDocumentedFree plan 4.9 Diagram types: flowcharts, diagrams, graphs
Compare all 18 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Real-time collaboration | Diagram types |
|---|---|---|---|---|---|---|---|---|
| 26 | SAP Signavio Process Modeler | 6.2 | No | — | No | — | — | BPMN 2.0; value chains; DMN |
| 27 | ConceptDraw DIAGRAM | 6.2 | No | $199/mo | No | — | — | flowcharts, block diagrams, process diagrams, UML diagrams, organizational charts, network diagrams, rack diagrams, cloud service architecture diagrams, technical schematics, building plans, floor plans, dashboards, infographics, presentations |
| 28 | StarUML | 6.2 | No | $129/mo | No | — | Yes | UML 2, entity-relationship, data flow, flowchart, mindmap, C4, SysML, BPMN, UI wireframe, AWS architecture, GCP architecture, Azure architecture |
| 29 | ARIS | 6.2 | No | — | — | — | — | — |
| 30 | Vexlio | 6.2 | Free plan | — | Yes | — | — | flowcharts, UML diagrams, block diagrams, state machine diagrams, software architecture diagrams, math diagrams |
| 31 | Mermaid | 6.0 | No | — | — | — | — | flowchart, sequence diagram, class diagram, state diagram, Gantt chart, timeline, mindmap, Git graph, use case diagram, event modeling diagram |
| 32 | D2 | 5.9 | No | — | Yes | — | — | software architecture diagrams; UML class diagrams; sequence diagrams |
| 33 | CloudSkew | 5.9 | Free plan | Free | Yes | — | No | cloud architecture diagrams, network diagrams, flowcharts |
| 34 | Preceden | 5.9 | Free plan | $10/mo | Yes | — | No | timelines, Gantt charts, project roadmaps, legal chronologies, comparative timelines |
| 35 | Hava | 5.8 | No | $59/mo | No | — | — | Infrastructure, security group, list, container, hybrid cloud |
| 36 | MyDraw | 5.7 | No | $3/mo | No | — | — | flowcharts, organizational charts, family tree diagrams, cross-functional diagrams, cause-and-effect diagrams, data flow diagrams, mind maps, SDL diagrams, Venn diagrams, workflow diagrams |
| 37 | Sparx Enterprise Architect | 5.3 | No | — | Yes | — | Yes | UML Use Case, Activity, State, Interaction Overview, Sequence, Communication, Package, Class, Object, Composite, Component, Deployment; BPMN; SysML |
| 38 | Dia | 5.2 | No | — | Yes | — | — | Entity-relationship diagrams; UML diagrams; flowcharts; network diagrams |
| 39 | ThinkComposer | 5.2 | No | — | Yes | — | — | concept maps, mind maps, flowcharts, use case diagrams, class diagrams, sequence diagrams, timelines, data models, organizational charts, business models, genealogy trees |
| 40 | Graphviz | 5.1 | No | — | — | — | — | graph diagrams; network diagrams; hierarchical diagrams |
| 41 | Pencil Project | 5.1 | No | — | Yes | — | — | GUI mockups, wireframes, flowcharts, desktop UI, web UI, Android UI, iOS UI |
| 42 | UMLet | 5.1 | No | — | Yes | — | — | class, use case, sequence, state, deployment, activity |
| 43 | Diagramo | 4.9 | No | — | Yes | — | — | flowcharts, diagrams, graphs |
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