It is a lightweight system extension for your Mac.

Features of Naarak-Studio uDock
Use a keyboard shortcut or mouse hotspot to activate it.
Running processes and all your drives are easily accessible.
Add tabs to keep track of your applications, documents, music, and folders.
Define and combine hotkeys with applications, documents, and folders to instantly open your favorite file with a keyboard shortcut.
Technical Details and System Requirements
MacOS 10.13 or later
Apple Silicon or Intel Core processor