This is an Hocus Pocus level editor. Webpage: https://www.doomworld.com/forum/topic/92451-release-hocus-pocus-level-and-graphics-editor/

It has all the levels of the game with every item location and all the invisible triggers and spawners. It's a great tool for routing and making strats.

Important note: Use it on a different folder than your normal setup for speedrunning, since it can mess your files.