Kmy-regex is an regular expression library for Java. It can compile a regular expression into bytecode and then load it into JVM on the fly. In the environments where class loading is not an option (such as applets) it can produce an interpreted (but slower) form of the regular expression.
QuickImage is an open-source utility for adding drawings and graphs to your Web applications. It was designed primarily for use with the SteelBlue Application Server, but is general enough to be used in many programming environments. The QuickImage package contains both Java classes that can draw images on the client's browser and a C++ program that can draw images on the Web server. They both interpret the same set of graphics commands, and you only need one version to add drawings to your Web applications.
The Java Penrose Empires Package allows you to compute the empires (forced tiles) for an arbitrary initial patch of tiles. Tilings may be saved for later, and may be exported to PDF, EPS, or PNG. This software represents a new method of computing forced tiles. Rather than using a "growth" approach (where some tiles are randomly forced), this system only shows the forced tiles in the system, leaving all unforced areas blank.
SERanks is a Java application that obtains the rankings of search expressions from search engines. It allows you to specify the search engines that are of relevance to you, offers lots of options for configuring the output and for governing the ranking process, and allows you to export the results to spreadsheet applications.