in Audacity you can use Truncate Silence, which is pretty similar. Though obviously just for audio tracks, and I find it a missed opportunity that there isn't a live preview with a slider
We have several silence-trimming operations in Ardour. There's no live preview with a slider because generalized to N tracks where N could theoretically be in the hundreds, that is hellaciously expensive. However, since you can undo/redo trivially when working with metadata instead of actual audio, it doesn't seem like much of an impediment.