PlantUML
Open-source tool for creating UML diagrams from plain text
⭐ 4.5/5Free Tier AvailableOpen SourceFounded 2009
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About PlantUML
PlantUML is an open-source tool that allows users to create UML diagrams using a simple and intuitive language. Instead of drawing diagrams with a mouse, users write text descriptions that PlantUML converts into diagrams. It supports various diagram types including sequence diagrams, use case diagrams, class diagrams, activity diagrams, and more.
PlantUML Interface Preview
Pricing at a Glance
| Free Tier | Lowest Paid | Enterprise |
|---|---|---|
| Completely free | Free | Free (self-hosted option) |
Key Features
✓Text-to-diagram
✓UML diagrams
✓Sequence diagrams
✓Class diagrams
✓Use case diagrams
✓Activity diagrams
✓Component diagrams
✓Open source
✓Self-hostable
✓IDE integrations
Use Cases
- • Diagramming + Development workflow optimization
- • PlantUML onboarding for new teams
- • Reducing manual tasks with PlantUML automations
Popular Integrations
SlackGoogle WorkspaceZapierHubSpotSalesforceNotion
Pros & Cons
👍 Pros
- ✓Completely free
- ✓Text-based (version control friendly)
- ✓Fast diagram creation
- ✓Excellent for developers
👎 Cons
- ✗Steep learning curve
- ✗Text-based (not visual)
- ✗Limited for non-UML diagrams
- ✗No real-time collaboration
User Reviews & Testimonials
“We switched in under a week and cut software spend materially while keeping the same workflow quality.”
“The comparison + pricing context made this an easy decision. Great shortlist quality.”
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