Best Diagramming Software in 2026
Updated
45ranked
6free plans on this page
$129/molowest paid tier
10 Oct 2026last checked
Diagramming Software, ranked on how quickly a newcomer can get going.10 of 10 products with recorded free access can be tried for free.
- 26 PlantUMLFree plan
- Free to practise on: yes
- Free trial: no
- Well documented: yes
- Runs where you work: yes
- 27 TextografoFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 28 VexlioFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 29 Pencil ProjectFree plan
- Free to practise on: yes
- Free trial: no
- Well documented: yes
- Runs where you work: yes
- 30 StarUMLPaid from $129/mo
- Free to practise on: no
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 31 yEd Graph EditorFree plan
- Free to practise on: yes
- Free trial: no
- Well documented: yes
- Runs where you work: yes
- 32 ConceptDraw OfficePaid from $499/mo
- Free to practise on: no
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 33 OmniGraffle
- Free to practise on: no
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 34 Diagramming ToolFree plan
- Free to practise on: yes
- Well documented: no
- Runs where you work: no
- 35 SAP Signavio Process Modeler
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 36 ARIS
- Well documented: yes
- Runs where you work: no
- 37 ClickCharts
- Well documented: yes
- Runs where you work: yes
- 38 D2
- Free trial: no
- Well documented: yes
- Runs where you work: yes
- 39 ThinkComposer
- Well documented: yes
- Runs where you work: no
- 40 Flowdia Diagrams
- Well documented: no
- Runs where you work: yes
- 41 ConceptDraw MINDMAPPaid from $199/mo
- Free to practise on: no
- Well documented: yes
- Runs where you work: no
- 42 Diagramo
- Well documented: no
- Runs where you work: no
- 43 Graphviz
- Well documented: no
- Runs where you work: yes
- 44 ConceptDraw DIAGRAMPaid from $199/mo
- Free to practise on: no
- Well documented: no
- 45 Mermaid
- Well documented: no
- Runs where you work: no
Compare all 20 in a table
| # | Platform | Score | Free plan | Free plan | Paid from | Real-time collaboration | Diagram types |
|---|---|---|---|---|---|---|---|
| 26 | PlantUML | 6.8 | Free plan | Yes | Sequence, use-case, class, object, activity, component, deployment, state, timing, regex, network, wireframe, Archimate, Gantt, mind map, WBS, EBNF, JSON, YAML | ||
| 27 | Textografo | 6.8 | Free plan | Yes | Yes | flowcharts, mind maps, decision trees, organizational charts, sitemaps, cross-functional flowcharts | |
| 28 | Vexlio | 6.8 | Free plan | Yes | flowcharts, UML diagrams, block diagrams, state machine diagrams, software architecture diagrams, math diagrams | ||
| 29 | Pencil Project | 6.7 | Free plan | Yes | GUI mockups, wireframes, flowcharts, desktop UI, web UI, Android UI, iOS UI | ||
| 30 | StarUML | 6.7 | No | No | Yes | UML 2, entity-relationship, data flow, flowchart, mindmap, C4, SysML, BPMN, UI wireframe, AWS architecture, GCP architecture, Azure architecture | |
| 31 | yEd Graph Editor | 6.7 | Free plan | Yes | BPMN diagrams, semantic networks, family trees, flowcharts, social networks, UML class diagrams, entity relationship diagrams, swimlane diagrams | ||
| 32 | ConceptDraw Office | 6.6 | No | No | Business process diagrams, process flowcharts, UML diagrams, technical drawings, infographics | ||
| 33 | OmniGraffle | 6.6 | No | No | family trees, flow charts, org charts, layouts, directed graphs, nondirected graphs | ||
| 34 | Diagramming Tool | 6.4 | Free plan | Yes | cloud architecture, flowcharts, sequence diagrams, entity relationship diagrams, UML class diagrams, C4 container diagrams, Kubernetes topologies, network diagrams, state machines, Gantt charts, Kanban boards, mindmaps, org charts, sitemaps, Sankey flows, XY charts, radar charts, treemaps, fishbone diagrams | ||
| 35 | SAP Signavio Process Modeler | 6.4 | No | BPMN 2.0; value chains; DMN | |||
| 36 | ARIS | 6.3 | |||||
| 37 | ClickCharts | 6.3 | Yes | Block, BPMN, brainstorming, data flow, electrical, ER, family tree, fishbone, flowchart, mind map, network, organizational, process flow, UML class, Venn, VSM, graph | |||
| 38 | D2 | 6.3 | Yes | software architecture diagrams; UML class diagrams; sequence diagrams | |||
| 39 | ThinkComposer | 6.2 | Yes | concept maps, mind maps, flowcharts, use case diagrams, class diagrams, sequence diagrams, timelines, data models, organizational charts, business models, genealogy trees | |||
| 40 | Flowdia Diagrams | 6.0 | Flowchart, swimlane, mind map, BPMN, network, Cisco network, rack, server layout, AWS architecture, Azure architecture, UML class, UML activity, UML use case, UML sequence, business process, process flow, chevron | ||||
| 41 | ConceptDraw MINDMAP | 5.8 | No | 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 | ||
| 42 | Diagramo | 5.8 | Yes | flowcharts, diagrams, graphs | |||
| 43 | Graphviz | 5.6 | graph diagrams; network diagrams; hierarchical diagrams | ||||
| 44 | ConceptDraw DIAGRAM | 5.5 | No | 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 | ||
| 45 | Mermaid | 5.4 | flowchart, sequence diagram, class diagram, state diagram, Gantt chart, timeline, mindmap, Git graph, use case diagram, event modeling diagram |
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