UMLGraph facilitates the declarative specification and drawing of UML class and sequence diagrams. One can specify a class design using the Java syntax complemented by Javadoc tags. Running the UmlGraph doclet on the specification generates a Graphviz diagram specification that can be automatically processed to create Postscript, GIF, SVG, JPEG, fig, or Framemaker drawings. Similarly, sequence diagrams are specified using declarative pic macros and compiled with the GNU plotutils pic2plot program into a PNG, PNM, (pseudo) GIF, SVG, AI, Postscript, CGM, FIG, PCL, HPGL, Regis, or TEK drawing.
astah* is a UML and mind map modelling tool for Agile software development. It provides developers with an easy-to-use sketching and modeling tool for drawing diagrams such as UML, ERD, DFD, and mind maps. Various versions are available, including a free edition and a Web-based communication server edition that allows users to share and comment on diagrams.