5 free plugins that electronic musicians will dig

ANIBUS is a simple yet good sounding synth with LFO, Filters, Vibrato controls and more.

Click on the pics to be taken to the download page

Field is an ambience generator 

TAL Noisemaker is another good synth

Scapes Wizard 2 is a step sequencer and sampler.
Check out the pro version!

Kickmaker makes customizable kick drum sounds