Drum Machine is a freeware drum rompler in VST/AU plugin formats for Windows and Mac OS X, featuring the drum sounds from our free 99 Drum Samples sample library. The plugin was developed by SampleScience. This initial version comes with twelve free drum kits and will be expanded with more built-in drum samples and kits in future updates (which will also free).
The plugin features eight drum slots with support for stereo and multiple mono outputs. Each drum channel comes with volume and pan controls, along with global pan/volume controls and an LFO for pitch modulation. The Low and High knobs in the upper-right corner of the user interface control the MIDI velocity range.
The drop-down menu is used for browsing through the available drum kits. More kits will be added in forthcoming free updates.

http://99sounds.org/vst-plugins/