https://blendermarket.com/products/flow-manager

The Next-Level Asset Tool for Blender  Speed up your workflow and improve your scenes using Flow, the next-level asset manager for Blender. Why next level? Because it is not the simple asset manager, but the unique set of tools, designed for improving the whole Blender workflow. Stop wasting time on browsing your folders, just add your assets and use them easily with a few mouse clicks! Create your scenes faster than ever!