SequenceDiagram for IntelliJ IDEA http://vanco.github.io/SequencePlugin.
with this plugin, you can
+ generate Simple Sequence Diagram.
+ Navigate the code by click the diagram shape.
+ Delete Class from diagram.
+ Export the diagram as image.
+ Exclude classes from diagram by Settings > Other Settings > Sequence
+ Smart Interface(experimental)
SequencePluginReload rename to SequenceDiagram.
Simple Sequence Diagram Generator. fixed version of SequencePlugin , work from 13.x.
The original version SequencePlugin come from firstname.lastname@example.org.