G-Force: Minimonsta, Oddity, Imposcar, M-Tron (Pro), String Machine
GForce Software
Native Instruments: Pro-53, FM7, FM8, B4, Elektrik Piano
NATIVE INSTRUMENTS : HOME | HARDWARE AND SOFTWARE FOR MUSICIANS, PRODUCERS, DJS, GUITAR AND BASS PLAYERS
Sonic Projects: OP-X
OP-X - Virtual Oberheim Clone - VST & Reaktor
Waldorf: PPG Wave 2.V
Waldorf Music | Home
AudioRealism: ABL (303 bassline), ADM (808/909/606)
AudioRealism
Propellerheads: Rebirth (303/808/909)
The ReBirth Museum
reFX: PlastiCZ, QuadraSID
reFX - Home
The d16 group also have a TB-303 emulation and are currently working on an SH-101 emulation.