Akaizer is a freeware application for Windows / Mac OS X / Linux which can time stretch and/or pitch shift any WAVE or AIFF sound file in the style of the 'cyclic' time stretch, which featured on old Akai sound samplers, like the S950 / S1000 / S2000 / S3000 series.
Set out in a hardware compressor visual style, it won't take you long to get your sounds thumping with this. Featuring Ratio/Attack and Release/Sensitivity and Makeup controls this free compressor is available for Windows MacOSX and Linux.
VST-plugin "Brandulator" is a complex sound processor that allows you to get quite interesting combined effects - comb-filter, trans-gate, vocoder, wah-wah, various types of modulation (chorus, flanger, phaser, ring, etc.).