Plutonium is an add-on module for FoundryVTT, available for free to the public.
Plutonium’s main functionality is its full compatibility with the 5etools dataset, allowing players and Dungeon Masters to easily import content they already own - via a few clicks.
It also adds various Quality of Life (QoL) features, including a character building tool (currently beta, available for Patrons), Directory Cleaners or UI improvements.