Lucid vs Umlet
Choose UMLet when the requirement is focused UML sketching with source access, deployment control, text-based element editing, and custom UML elements. Keep Lucid when teams need a broader collaboration suite spanning whiteboards, product roadmaps, data-linked visuals, cloud discovery, governance, or enterprise controls; the supplied UMLet evidence does not establish coverage for those workflows.
Decision guide
The practical reasons to choose either option, based on documented capabilities.
Choose Umlet if
- Developers and architects creating class, sequence, activity, state, use-case, or deployment diagrams
- Teams that prefer editing UML elements through text and a small markdown dialect
- Organizations requiring a GPL-3.0, self-hostable UML tool with customizable element types
Stay with Lucid if
- Virtual whiteboarding, brainstorming, retrospectives, or meeting facilitation is required
- Product prioritization and roadmapping must share the same platform
- Diagrams must remain linked to spreadsheet, CSV, or cloud-provider data and use conditional formatting or automated cloud discovery views. Umlet can still cover manual UML and deployment diagrams, but these automated, up
Deployment and operations
UMLet is licensed under GPL-3.0 and is identified as self-hostable in the supplied repository facts. It is distributed as a stand-alone application for Windows, macOS, and Linux, an Eclipse plugin, a Visual Studio Code extension, and the UMLetino web app. The sources direct users to the project website for compiled releases but do not document Docker, Kubernetes, or a formal maintenance arrangement.
Migration considerations
UMLet exports diagrams to EPS, PDF, JPG, SVG, and the clipboard. No supplied source documents direct Lucid-file import or format compatibility, so migration may require recreating editable diagrams rather than importing them.
Feature fit
What Umlet covers
- UML and technical diagram creation
- Sequence and activity diagrams
- Diagram export and sharing
- Custom diagram elements
What’s different or missing
- Collaborative virtual whiteboards
- Product planning and roadmapping
- Data-linked visualizations
- AI-assisted diagrams and boards
- Automated cloud architecture generation
- Governed process repositories and approvals
- Enterprise security and retention controls
- Documented Lucid application integrations
Project snapshot
- GitHub stars
- 1,601
- Contributors
- 35
- Language
- JavaScript
- Last commit
- Oct 9, 2025
- Latest release
- Not available
Categories: Knowledge Management, Diagramming, Digital Whiteboards, Project Management
Sources and editorial review8 linked sources
Public documentation supports this comparison. Automation assists collection and classification; editorial standards and corrections remain the responsibility of Kris.
Free UML Tool for Fast UML Diagrams
repository description · github.comUMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements.
readme · github.comGo to http://www.umletino.com to use UMLet in your web browser
readme · github.comUMLet is a UML tool aimed at providing a fast way of creating UML sketches. UML elements are modified using text input and a small markdown dialect instead of pop-up dialogs.
verdict · umlet.comUMLet supports a variety of UML diagram types: class diagrams, use case diagrams, sequence diagrams, state diagrams, deployment diagrams, activity diagrams
shared feature · umlet.comFind below the full-featured UMLet as stand-alone app for Windows, macOS, and Linux, or as Eclipse plugin. It is also available as web app called UMLetino , and as extension to Visual Studio Code .
deployment · umlet.com2001+ :: GNU GPL 3.0
deployment · umlet.comexport diagrams to eps, pdf, jpg, svg, and clipboard
migration · github.com
