ProcessOn vs Astah Professional

ProcessOn8.7Visit Astah Professional6.9Visit

Higher score ProcessOn #6 in Diagram Software 8.7/10 Free plan · 7-day trial Free planFree trial✓ 2 of 3 features Visit ProcessOn

vs

Astah Professional #23 in Diagram Software 6.9/10 20-day trial Free trial✓ 1 of 3 features Visit Astah

• ProcessOn fits best

  Affordable collaborative diagramming across devices

• Astah Professional fits best

  Software teams needing UML and code engineering

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Side by side

Feature	ProcessOn 8.7/10 Visit ↗	Astah Professional 6.9/10 Visit ↗
At a glance
Editor score	8.7	6.9
Ranking	#6 in Diagram Software	#23 in Diagram Software
Best for	Affordable collaborative diagramming across devices	Software teams needing UML and code engineering
Pricing model	Free plan + paid	Paid
Starting price	—	$129.99/user/yr
Free plan	✓ (best)	—
Free trial	7 days	20 days
Free trial length	7 days	20 days
Deployment	Cloud	Desktop
Platforms	Web	Windows, macOS, Linux
Support	Email	Docs
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features ProcessOn 2/3 · Astah Professional 1/3
Real-time collaboration	✓ (best)	—
Desktop app	—	✓ (best)
Version history	✓ (best)	—
Specs
Diagram types	mind maps, flowcharts, swimlane diagrams, Gantt charts, UML diagrams, architecture diagrams, ER diagrams, network topology diagrams, organizational charts, Venn diagrams, BPMN diagrams, circuit diagrams, floor plans, timelines, fishbone diagrams, tree diagrams, matrix diagrams, data visualization charts	Class, object, communication, timing, component, deployment, composite structure, use case, sequence, activity, statemachine, package, requirement, mind map, ER, flowchart, CRUD, data flow, traceability map, Eriksson-Penker process
Export formats	PNG, PDF, PPT, SVG, Excel, Word, JPG, POS, XMind, FreeMind, Visio	JPEG, PNG, EMF, SVG, RTF, HTML, CSV, XML, CMOF
Import formats	Visio, XMind, Markdown, Mermaid, Excel, POS	Excel, XML
Maximum editors	Not checked yet	Not checked yet
Our review
Pros	Free Edition supports basic diagramming with up to 3 collaborators Real-time collaboration, comments, permissions, and version restore Imports and exports formats including Visio, XMind, SVG, and PDF	Supports UML, ER, flowcharts, requirements, CRUD, and traceability maps Includes Java, C#, and C++ reverse engineering plus PHP and SQL generation Runs on Windows, macOS, and Linux with API, plug-ins, and AI features
Cons	Free Edition is limited to 9 personal files Personal plans are aimed at individual creators No open-source edition is offered	No free plan; paid access starts at $11.99 per user per month Licensing is limited to one editor Collaboration is file and project-based rather than live simultaneous editing
Our verdict	ProcessOn is an online diagramming and mind-mapping platform for individuals and teams that need to create, share, and revise visual documents. It supports flowcharts, mind maps, UML, BPMN, network topology diagrams, organizational charts,… Read the review →	Astah Professional is desktop modeling software for software developers, system designers, technical architects, and engineering teams. Its scope extends from UML to entity-relationship diagrams, flowcharts, data flow diagrams,… Read the review →

Strengths and trade-offs

• ProcessOn — where it wins

  • Free Edition supports basic diagramming with up to 3 collaborators
  • Real-time collaboration, comments, permissions, and version restore
  • Imports and exports formats including Visio, XMind, SVG, and PDF

  Where it doesn't

  • Free Edition is limited to 9 personal files
  • Personal plans are aimed at individual creators
  • No open-source edition is offered

• Astah Professional — where it wins

  • Supports UML, ER, flowcharts, requirements, CRUD, and traceability maps
  • Includes Java, C#, and C++ reverse engineering plus PHP and SQL generation
  • Runs on Windows, macOS, and Linux with API, plug-ins, and AI features

  Where it doesn't

  • No free plan; paid access starts at $11.99 per user per month
  • Licensing is limited to one editor
  • Collaboration is file and project-based rather than live simultaneous editing

• ProcessOn8.7/10 · Free plan · 7-day trial

  A flexible diagramming workspace with a useful free tier and broad format support.

  Visit ProcessOnFull verdict →
• Astah Professional6.9/10 · 20-day trial

  A broad desktop modeling suite for software engineering, with one-editor licensing.

  Visit AstahFull verdict →