Best Diagram Software in 2026
Updated
37 diagram software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
37ranked
0free plans on this page
$199/molowest paid tier
9 Oct 2026last checked
Diagram Software, ranked on how quickly a newcomer can get going. 0 of the 12 on this page can be tried for free.
- 26 Grapholite
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 27 ConceptDraw MINDMAPPaid from $199/mo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 28 Violet UML Editor
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 29 Diagram Designer
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 30 Graphviz
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 31 Holori
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 32 OmniGraffle
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 33 Mermaid
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 34 TaskMap
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 35 Cloudcraft
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 36 ConceptDraw DIAGRAMPaid from $199/mo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 37 SAP Signavio Process Manager
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
Compare all 12 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Diagram types | Real-time collaboration |
|---|---|---|---|---|---|---|---|---|
| 26 | Grapholite | 6.0 | No | — | — | — | flowcharts, organizational charts, mind maps, swimlanes, SWOT diagrams, BPMN diagrams, UML diagrams, floor plans, brainstorming diagrams, website wireframes, workflow diagrams, TQM diagrams, Venn diagrams, network layouts, planograms, office plans, home plans | — |
| 27 | ConceptDraw MINDMAP | 5.9 | 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 | Violet UML Editor | 5.9 | No | — | Yes | — | class, sequence, state, object, use case | — |
| 29 | Diagram Designer | 5.8 | No | — | Yes | — | flowcharts, UML class diagrams, illustrations, slide shows | — |
| 30 | Graphviz | 5.8 | No | — | — | — | graph diagrams; network diagrams; hierarchical diagrams | — |
| 31 | Holori | 5.8 | No | — | Yes | — | AWS, Azure, GCP, multi-cloud, Kubernetes, Terraform, cloud architecture | Yes |
| 32 | OmniGraffle | 5.8 | No | — | No | — | family trees, flow charts, org charts, layouts, directed graphs, nondirected graphs | — |
| 33 | Mermaid | 5.7 | No | — | — | — | flowchart, sequence diagram, class diagram, state diagram, Gantt chart, timeline, mindmap, Git graph, use case diagram, event modeling diagram | — |
| 34 | TaskMap | 5.7 | No | — | Yes | — | process maps | — |
| 35 | Cloudcraft | 5.6 | No | — | Yes | — | cloud architecture, infrastructure, network, security | Yes |
| 36 | ConceptDraw DIAGRAM | 5.6 | 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 | — |
| 37 | SAP Signavio Process Manager | 5.6 | No | — | No | — | BPMN 2.0, DMN, EPC, conversation diagrams, choreography diagrams | — |
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