Gross beat how's the best way to say it... On phone too hard to say.... Ultimately changes the playback of audio, so yeah you can glitch in interesting ways, allows pitch modulation as well as jumping around a buffer in a very intentional way. I love to put it on hats and snares for little slushy playback slow downs, grab individual hits and bend, or an early version of the drum buss to reorder hits that can later be sliced and further manipulated.
Bottom line, it is the best buffered audio fx I've found. It is not explicitly about repeating glitches, though you can do that, but just the ability to move around in a playback buffer.
If anybody has any other glitch or fsu or weird fx, please share. I've got a category of fx in my daw called texture, and it easily has 10 times the plugins of any other category.

These plugins are seen as less desirable, so are almost always free, and back in the earlier days of vst land these were abounding as developers honed their chops. Talking like Jack Dark, destroyfx, smartelectronix,
ArcDev, etc, etc, etc.
I wish Variety of Sound would quit with the mixing plugs, and get on with some fsu. NastyDla is a very quality delay. I wish he'd work in that direction for a while. Sound design type plugs.