a rule engine and scripting environment written entirely in Sun's Java, you can build Java software that has the capacity to "reason" using knowledge you supply in the form of declarative rules. Jess is small, light, and one of the fastest rule engines av
a Java-like library that acts as a bridge between the C++ and the Java worlds. It offers a wide range of the Java facilities without losing the power of C++.
a portable, optimizing, ahead-of-time compiler for the Java Programming Language. It can compile Java source code to Java bytecode (class files) or directly to native machine code, and Java bytecode to native machine code.
a collection of machine learning algorithms for data mining tasks. The algorithms can either be applied directly to a dataset or called from your own Java code.