FreeMarker is a template engine that was originally designed so that servlet-based applications could keep graphical design separate from application logic. The templates provide an easy and highly flexible way to generate any kind of text output (HTML, PostScript, TeX, source code, etc.) from a variety of data sources such as Java objects, Jython objects, XML object models, and more.
OpenEJB is a simple, lightweight Enterprise JavaBeans (EJB) container and server. You can embed OpenEJB in your own applications, or in a Web application server like Tomcat, or run it as a standalone EJB server. It supports EJB 3.0, 2.1, 2.0, and 1.1, and has partial support for EJB 3.1.
CSS Compressor is a Java library and utility for reducing the size of Cascading Style Sheets (CSS). It uses many approaches for reducing CSS files: whitespace and comment stripping, merging selectors with identical rules, using short-hand color representations, omitting semi-colons and units where unnecessary, short-hand box-model properties, and many other small tweaks.
The yawiki engine is the underlying rendering engine of the yawiki application. It is a standalone rendering engine to convert wiki markup into HTML. It can be included in any application. So far it covers three different markups: BBCode, the old yawiki markup, and the Creole 1.0 specification.
MiGLayout is a versatile and flexible Swing and SWT layout manager. It uses string constraints or API type-checked constraints to format the layout. Strings are both short to type and easy to understand. MiGLayout can produce flowing, grid-based, absolute (with links), grouped, and docking layouts. It was created to be to manually coded layouts what Matisse/GroupLayout is to IDE-supported visual layouts.
JSAP (Java Simple Argument Parser) not only syntactically validates your program's commandline arguments, but it converts those arguments into objects you specify. There's a pretty big (and growing) list of return types suppored by JSAP, including Integers, Floats, Dates, URLs, and even java.awt.Colors; you can also add your own in a matter of minutes. Cascading configuration files can provide arguments not supplied at the command line, and a custom ANT task is included to generate a JSAP class based on your commandline configuration.