Javagiac is a java native interface to the giac computer algebra system C++ library. Get it for

• windows 32 bits, 64 bits (standalone)
• linux PC 32 bits, 64 bits, requires installing giac (e.g. from a debian repository)
• Mac 64 bit Intel (standalone)

Untar the archive, then read the file java.README for futher install instructions. There is a small runme file in the javagiac directory, if your install is OK, java javagiac.runme should work. You can modify the example file, or import all the java files (except runme) in your prefered development environment (eclipse, netbeans...).