Blender has an asset manager build in. You can add additional asset library(folders) thru preferences (Ctrl+comma or F4->preferences or edit menu->preferences) in 4.5 it’s under files section. In 5.2 it’s under asset library section. You can access the library by changing an editor window (like the timeline editor in layout workspace) to the East browser editor. The hotkey is shift+F1 (usually twice. First time usually is the file browser.) note: the mouse cursor needs to be over the editor area you want to change.
