JGame is a 2D game engine that makes multi-platform development easier. It runs on the Java JRE 1.3+ platform with optional OpenGL (JOGL) enhancements, the J2ME (MIDP2.0/CLDC1.1) mobile platform, and the Android (2.1+) platform. JGame features sprites with automatic animation and collision detection, a tile-based background with easy sprite-tile interaction facilities, automatic scaling, sound, game state, persistent storage, and game options. The engine provides an enhanced graphics API with a fallback to simpler and more efficient graphics on J2ME and plain JRE. A patched version of the JBox2D physics engine that runs on all platforms is included.
JGame Flash is an ActionScript 3 port of the JGame 3.5 API. It can be compiled with the free Flex toolkit. A Java-AS3 translator is included to make porting games easier. The goal of this project is to eventually enable JGame Java games to be converted (partially) automatically to ActionScript 3. JGame Flash works on Android Flash 10.1 and supports accelerometer input.
PhotoPnMTools is a simple toolkit for processing photographic images using improved algorithms. It is based on Poskanzer's PPM toolkit. It contains resizing, sharpening, and contrast / saturation / color balance filters. There is an interactive tool for cropping and color editing, and a tool for making Web albums.
YProlog is a pocket Prolog engine written in 100% Java. It provides a number of fast and easy Java-Prolog interfacing functions that enables the Prolog database to be used like an SQL-type database. It has fast consult and retract operations, can "serialize" database contents into text, and can easily load and store tables or contents of Java objects. It is based on Jean Vaucher's XProlog.