You can still get this classic freeware plugin dating back to 1999 over at Wayback Machine. The main difference between the 'Pro' version and this one, is that the Pro has 12 note polyphony and supports pitch bend and mod wheel. The free version has 8 note polyphony and does not support those MIDI features.
Not a bad synth, but super limited. No pitch bend or LFO means something like vibrato wouldn't be possible, nor pitch slides. But it's oscillators and filter are way better than on Neon for example. And all parameters are open to automation. Good for old school sounds.