pyPEG is a quick and easy solution for creating a parser in Python programs. pyPEG uses a PEG language in Python data structures to parse, so it can be used dynamically to parse nearly every context free language. The output is a plain Python data structure called pyAST, or, as an alternative, XML.
Marathon is a GUI test tool that allows you to play and record scripts against a Java Swing UI. It's written in Java, and uses Python and Ruby as its scripting language (the emphasis being on an extremely simple, readable syntax that customers/testers/analysts feel comfortable with). Marathon includes a recorder, editor, player, and debugger to simplify working with test scripts.
Project-Builder is a tool that helps you build packages of your application (managed with a tar file or a configuration management system such as CVS, Subversion, Mercurial, or GIT). It is able to generate a build package skeleton for your project. With simple configuration files, it can generate for up to 20 different tuples of distributions (name, version, architecture), including Fedora, Mandriva, OpenSuSE, Debian, Ubuntu, Gentoo, and Slackware. It is a good tool for doing continuous packaging.
Java GetOpt Generator is a tool that generates a command-line argument parser from an XML file. Both a "parser" and "config" class are generated, which allows your program to either be launched from the command-line or programmatically configured and executed from another Java application. GetOpt Generator is self-hosting, meaning that it uses itself to generate its command-line parser.
BOUML is a UML 2 tool box that allows you to specify and generate code in C++, Java, IDL, and PHP. BOUML is very fast and doesn't require much memory to manage several thousands of classes. BOUML is extensible, and the external tools (named plug-outs) can be written in C++ or Java, using BOUML for their definition as any other program. UML models can be exported to HTML pages, including PNG or SVG graphics.