Example Synth is a free software synthesizer developed by SK. Available format(s): VST for Windows.
Example Synth is a very basic (user interface wise and synth-engine wise) FM synthesizer created as an example of Stefan’s Jewel user interface framework. It may not be too useful in its current state as there are some common features missing (e.g. no MIDI controller support yet) and it may still contain some bugs.
http://www.jewe.org/