Buffer Synth 2 is a free, open-source VST plugin that permits altering two buffers in various capacities.
With Buffer Synth 2, you get easy installation as all you have to do is copy the BufferSynth2.vst file into your vst plugins directory (Library/Audio/Plug-Ins/VST/). But, note that this software is licensed and distributed under the terms of the MIT License.
Overall, if you're looking for a free and open-source VST plugin that offers a unique way to manipulate audio, then Buffer Synth 2 is definitely worth checking out.
Version 1.03: N/A