Tech riderRev. 20 Sept 2026

OnUML

Ch 255.7of 32 AI Diagram Generators

1Runs onWeb
2CostsNot stated by the maker
3Mermaid supportYes
4Platformweb
5Export formatsPNG, SVG

4 lines stated Written from the maker's own pages: onuml.com

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The OnUML homepage

Overview

OnUML is ranked #25 of 32 in AI diagram generators on Specifiction. It runs on Web.

Compared on AI diagram generators

Free plan: Yesonuml.com
Mermaid support: Yesonuml.com
Platform: webonuml.com
Export formats: PNG, SVGonuml.com

Best OnUML alternatives

All accessCh 01 Creately Free planFree trialAPI Free to start7.9 All accessCh 02 Lucid Train Free planFree trialLinux from $2.50/mo7.6 All accessCh 03 Nimbalyst Free planiOSLinux from $16.67/mo7.4 All accessCh 04 OpenCharts Free planAPIMac from $9.99/mo7.4 All accessCh 05 Mermaid Chart Free planFree trialAPI from $12/mo7.3 All accessCh 06 ArchitectureDiagram.ai Free planAPIWeb from $4.99/mo7.1

Where it ranks on Specifiction

Best AI Diagram Generators in 2026#25 of 32

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