UML tool: Sequence diagrams

Examples of UML sequence diagrams with Modelio

UML2 has considerably improved sequence diagrams. It is now possible to:

  • reference other UML sequence diagrams,
  • represent loops and choices,
  • define formal and current call parameters (gates), and so on

Modelio sequence diagrams support all these powerful features, and provide a set of smart interactions that make modeling even easier.


Just drag and drop a class into a sequence diagram to create a lifeline, or drag and drop an interaction into a sequence diagram to create an interaction reference with all its gates.

UML Sequence Diagram example