<a href="
http://www.greenoak.com/crystal/about.html"> Green Oak´s - Crystal </a>
This one is a real must have !
Crystal is a semimodular VST instrument for Mac or PC. It use subtractive and FM synthesis, but that is not enough to explain this synth.
3 OSC with 26 waveform presets, 10sec. 4 band delay with a spectral spliter. Osciloscopes for each OSC, 5 animated lfo´s with many presets, 6 nine point drawable modulation ENV´s, each OSC can have a 24db
lp-hp-bp-notch-ResLp filter,all come together in a huge 16port modulation matrix.
Program morph, copy and paste functions for everything,midi sync on lfos, delay, envs, and a good sorted 5page surface rounds up crystal.
From my view, all this features of crystal reach the features of absynth and beyond.
You can create many kind of sounds like huge pads, leads ,basses and all those standard.
But you can create sounds like WAVE SEQUENCES or GRANULAR things.
Crystal comes with a very good preset bank and you can download two additonal banks,too.
Decide yourself how crstal sounds and can !
Crystal is free!
This will be one of my favorite instruments for a long time.