Great tool for adding space in your mix. I usually put in on the "instrument/melodic" bus and sidechain it with the signal from the percussion bus and use fast attack on the bands to keep the percussion from drowning.
IVGI - saturation & distortion Free plugin
Camel Crusher - Free VST multi-effect plug-in for Windows and Mac. Great fro Electric guitar. http://www.vstplanet.com/News/14/Camel-Crusher-free-VST-multi-effect-plug-in.htm
Free Filter VST Effect Plug-in for Windows 32/64-bit http://www.vstplanet.com/News/2016/free-filter-vst-effect-plug-in-for-windows-32-64-bit.htm
Over 90 Free VST Effects Plugins
HY-Filter free filter effect VST plug-in for Windows (32 and 64 bit). http://www.vstplanet.com/News/2016/hy-plugins-releases-hy-filter-free-vst-filter-for-windows.htm