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.
Jamon is a text template engine for Java that is useful for generating dynamic HTML, XML, or any text-based content. It has a rich feature set that supports encapsulation, parameterization, functional decomposition, and reuse of presentation logic. Because it is compiled to non-reflective Java code, and statically type-checked, Jamon is ideally suited to supporting refactoring of template-based UI applications. Templates declare the arguments they require for rendering, including dynamic template content ("fragments"), and are translated into Java classes with public methods whose signatures reflect the arguments declared in the templates. This provides compile-time type- checking as well as excellent performance.
JTLT is a general text based templating system that is very easy to use and powerful. It can be used for almost anything, including code generation for translators/compilers and HTML output for Java servlets. It features replaceable keys, nested block structures, an extensible macro system (even keys are implemented as macros), a separation of parsing and output generation, a separation of macro settings and parsing, in-memory caching of parsed templates, weak typing, and extensive documentation.
JavaFind is an implementation of the Unix "find" program that allows Java programs to search for files in a platform-independent way. It can recursively search for files by regex as well as with many of the useful find options, including max depth, min depth, follow symlinks, and file type. It is intelligent and can automatically choose the best method to perform the find operation. It detects if it's running on a GNU system and transparently delegates the speed-sensitive work to the GNU utilities.
Isobel is a framework to build complex information retrieval and analysis systems. Isobel can be functionally divided in two subsytems, Isobel Gatherer (the crawling and filtering subsystem) and Isobel Analyzer (the analysis subsystem). The two subsytems can also be used separately. Isobel Gatherer offers ready-to-use services like content fetching, scheduling, document format conversion, Hyperlink graph storage and analysis, content storage and indexing. A programmer may easily add new services. Isobel Analyzer uses the IBM UIMA architecture to reuse the analysis components developed for this architecture.