EZ-SOUND has released a freeware version of its Arp-Edge arpeggiator VST for Windows which features multi-sampled synths: SID, Nord lead, Sequential six tracks, Voyager, MC505, CZ etc
Arp-Edge is also available as a SOUNDFONT.
Pricing and Availability:
Emulate multiple mics, change proxmity and axis on the fly with UA Hardware
Seamless audio and MIDI switchover between computers