Xuse manages requirements, use cases & other artefacts that drive software design. Xuse focuses on clear documentation & communication. It defines an XML data model for requirements & use cases with XSLT providing multiple derived views: HTML/SVG/PDF.
Note there is no GUI for entering requirements, however another project (https://sourceforge.net/projects/xguse/) will provide a GUI.
UMLSpeed is a compiler for a C-style language of UML notation. It can produce SVG UML diagrams, XMI documents and generate source code in various languages.
Buildap is a Visual Component Based Development framework. It is available as standalone tool as well as Netbeans and Eclipse plugins. SVG viewer/editor and Diagram Editor are also available. See Buildap powered project at http://e-records.buildap.com/.