Earth allows you to find files across a large network of machines and track disk usage in real time. It consists of a daemon that indexes filesystems in real time and reports all the changes back to a central database. This can then be queried through a simple, yet powerful, web interface. Think of it like Spotlight or Beagle but operating system independent with a central database for multiple machines with a web application that allows novel ways of exploring your data.
S. Wunderlich, M. Ring, D. Landes, and A. Hotho. CISIS-ICEUTE, volume 951 of Advances in Intelligent Systems and Computing, page 14-24. Springer, (2019)