UML component, deployment, state chart, class, use case and activity diagrams. I mostly use PlantUML, which is, due to its textual source notation, embeddable i

UML component, deployment, state chart, class, use case and activity diagrams. I mostly use PlantUML, which is, due to its textual source notation, embeddable into Markdown or AsciiDoc files and are therefore comparably easy to version. PlantUML works best with sequence diagrams because automatic layout is much easier ("sequential") for them.