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/

BlueARP MIDI Arpeggiator

BlueARP is a VST MIDI Arpeggiator with pattern sequencer style, designed for electronic music genres.

http://graywolf2004.net/wp/

how to:

https://www.youtube.com/watch?v=pZtb6hZGubY

HY-MBMFX Multi-Band Effect

The free version of HY-MBMFX is a 3-band FX unit with a single FX slot on each band. The plugin comes with a long list of available effects (20 in total), including a variety of filters, delay effects, bitcrushers, distortion, modulation effects, a compressor, and even a reverb. The included effects sound very good, as is expected from an HY-Plugins release. Each slot also features input and output volume controls, stereo width and pan adjustment, a brickwall limiter, and mono, solo, and bypass switches. The top part of the GUI hosts the preset manager, A/B testing and undo/redo buttons, whereas the two knobs on the bottom part of the interface allow the user to adjust the frequency band split points.

http://hy-plugins.com/product/hy-mbmfxwinmac/