A fast and reliable tool, written in Java 8, for generating professional UML sequence diagrams from text. Supports actors, con-/destructors, threads, broadcasts, notes, and fragments. Can serve as a Javadoc taglet. Exports PDF, (E)PS, SVG, PNG, ...
The source code is hosted at http://github.com/sdedit/sdedit
...The workflow tool is an extension for the open source Eclipse programming tool from IBM. This workflow tool has been integrated into the dotSource Studio. It consists of 8 individual Java projects, which together form the WorkFlow tool. They logically can be subdivided in core components and graphical elements. About dotSource Labs and Sourceforge, we provide the open source code to interested parties.
Requirements: Java5/At least Eclipse version 3.3/GEF Draw2d
More information on dotSource Labs!