This is Concentrate.
It's a silence remover for Ableton Live. Set a threshold, tweak some settings to fit your audio, press a button and you're done.

Concentrate updates a clip on an audio track to only include the parts you want.
You can even line up the kept audio in consecutive clips if you are prepping
a sample for chopping, or want to create glitchy sounds.
Start by adjusting the Threshold. Audio regions that exceed this value will be kept,
and regions that fall below the value will be discarded. Audio regions that
will be kept are outlined, and regions that will be discarded are faded back.
Increase the Min. Silence to smooth out your selection. This setting determines how
long a region must last before it is considered below the threshold. Low values will split your audio
at every tiny dip in volume, while higher values ignore short pauses to keep your phrases intact.
Left Pad adds some cushioning ahead of the kept audio regions.
Right Pad adds a smooth tail to the end of your regions so they don't end with an abrupt silence.
Select Snap to Zero Crossings to make the edges of the kept audio regions snap to the center
line of the sound wave. This can help prevent clicking and popping.
Select Keep Clips in Place to keep the audio clips in their original positions when you commit your changes to the audio track.
Select Stack Clips to arrange the clips of kept audio regions consecutively on the track.
This can be useful for prepping samples for chopping or finding interesting sounds.
In short, Concentrate is the silence remover you've been waiting for.
Requirements
- Ableton Live: Version 12.2 or higher (Suite, or Standard with M4L add-on).
- Max: Version 9.0 or higher.
- Operating System:
- macOS: 11.0 (Big Sur) or later.
- Windows: Windows 10 (version 22H2) or Windows 11.
Important: Concentrate is a Max for Live device and only works with Ableton Live.
It also uses special features that require Max 9 or higher.