plantuml

PlantUML is a program allowing to draw UML diagrams, using a simple human readable text description.
PlantUML supports the following diagram types:

sequence diagram
use case diagram
class diagram
activity diagram
component diagram
state diagram

Output images can be generated in PNG, in SVG or LaTeX format.  PlantUML also supports generation of ASCII art diagrams (only for sequence diagrams).

          

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License: GPL-3.0-or-later
URL: http://plantuml.sourceforge.net