Terrorsoft’s Gabber-O-Matic is a freeware VSTi plugin, suitable for making hardcore kicks.

It has three controls,

• Tikkeltje Promo, this seems to be the thump sound
• Stampgehalte, some kind of distortion (add noise in some settings)
• Vleugje Angerfist, sounds like this controls tone of the kick

This plugin can be downloaded from Gersic.