JAbsolute is an ear training Java application to help you develop absolute pitch. It works on any platform supported by the Java Virtual Machine. It has been tested on Linux, Windows and MacOSX. This is a very easy to use piece of software. Very intuitive and powerful. With 20 minutes a day, you'll soon be on your way to develop absolute pitch.
Take a look at the JAbsolute user's guide to get an idea of what this wonderful program can do for you.