SyncerSoft has released Q9 Oldvox, a free virtual analogue synthesizer plug-in for Windows.
Q9 Oldvox contains an automatic detune mode, two separate oscillators, a filter and an LFO. The synthesizer has a bright warm and fat sound. It's ideal for use in dance, techno, dubstep, electronica, drum 'n' bass, big beat, dub, reggae and all other styles.
LFO modulation sections was designed specially for the Dubstep genre but can be used in other styles too of course.
Q9 Oldvox is free and is available for Windows as a VST instrument plug-in.