Theres a vst called Invader by e-phonic which is great for fx. There’s also some drum machines made by them on this page
http://www.e-phonic.com/vstplugins/
Leads and other stuff Synth1 is a goodie and free also
http://www.geocities.jp/daichi1969/
Also Mainliner by Arc dev industries is a good emulation of the Novation Super BassStation. They make proper good FX too. The Echo tank tape plugin gets hammered 
http://device.antisound.net/?section=sig_gen
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