UML

Diagram Types

The following sites explain the UML 2.5 diagram types:

• UML 2.5 Notationsübersicht (German) - A short PDF with an example for each UML2.5 diagram type (in German).
• UML 2.5 Diagrams Overview - UML diagram types explained; with separate examples.
• Overview of the 14 UML Diagram Types - UML diagram types explained; with inline examples.
• PlantUML in a nutshell - A quick overview on different UML / non-UML diagram types.
• Wikipedia: Unified Modelling Language (German) - About UML, includes the diagram types (in German).
• Allen Holub’s UML Quick Reference - Short descriptions with examples of different UML diagram types.
• Kapitel 5.1 “Die Diagrammarten der UML2” in Gernot Starke: Effektive Softwarearchitekturen, Hanser Verlag, 5. überarbeitete Auflage, 2011. ISBN: 978-3-446-42728-0.

Tools

These tools allow drawing UML 2.5 diagrams:

Open Source / Free to Use, Single User

• PlantUML
• diagrams.net (aka draw.io)
• ArchiMate
• modelio

Paid, Single User

• OmniGraffle (mac)

Paid, Multi-User

• Enterprise Architect
• Visual Paradigm

The UML Standard

• About the Unified Modeling Language Specification - The latest UML specification (about 800 pages, hard to read).