yUML
Diagramming software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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£4.70 per month
Free Trial unavailable
Free version
Small
Medium
Large
- Information technology and software
- Education and training
- Media and communications
What is yUML
yUML is a text-to-diagram tool used to create UML diagrams (such as class and sequence diagrams) from a compact textual syntax. It targets software developers, architects, and technical writers who want diagrams that are easy to version, embed in documentation, and generate programmatically. The product is commonly used via its web editor and rendering endpoints to produce image outputs for documentation and wikis.
Text-based diagram creation
yUML generates diagrams from a concise textual notation rather than manual drag-and-drop editing. This makes it practical for developers who prefer writing and reviewing changes as text. It also supports copy/paste and quick iteration when diagram structure changes frequently.
Fits documentation workflows
Because diagrams originate as text, they can be stored alongside source code and documentation. Teams can review diagram changes in code review tools and track revisions over time. This approach is often easier to automate than maintaining binary diagram files.
Fast UML-focused output
yUML focuses on UML diagram types and provides straightforward rendering to common image formats for sharing. It is well-suited for producing lightweight diagrams for specs, READMEs, and wiki pages. The narrow scope can reduce setup time compared with broader visual collaboration suites.
Limited visual collaboration features
yUML is primarily a diagram renderer/editor rather than a full visual collaboration workspace. It does not emphasize features like multi-cursor whiteboarding, sticky notes, facilitation tools, or broad template libraries. Teams needing real-time workshop-style collaboration may find it insufficient.
Less control over styling
Text-to-diagram tools typically provide fewer fine-grained layout and design controls than canvas-based diagramming products. Users may have limited ability to precisely position elements or apply detailed branding and formatting. Complex diagrams can require iterative syntax changes to achieve the desired layout.
UML-centric scope
yUML is oriented around UML diagramming rather than general-purpose diagram types. Organizations looking for extensive support for process mapping, UI wireframes, journey maps, or mixed-format boards may need additional tools. This can create gaps for non-engineering stakeholders.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free | £0 (Free) | 5 free saved diagrams; your own namespace. |
| Sweet | £4.70 per month | Unlimited saved diagrams; no 'Created with yUML' badge; no adverts; your own namespace; email support (1–2 day response). |
| University | £3,200 per year | For up to 1,000 active students; unlimited saved diagrams for students with a uni email address; no badge; no adverts; each student has a private namespace; email support (1–2 day response). Contact for details. |
