Entities List, THE FOUNDATION OFFICIAL WIKI

Entities are the main roadblocks that players must face in order to advance. They all differ in mechanics and difficulty, along with some being encountered more rarely than others. Certain audio cues or visual imagery can warn you before an entity spawns in.

Entity–relationship model - Wikipedia

How To Write An SCP - SCP Foundation

Foundation Departments - SCP Foundation

SCP: Containment Breach Multiplayer on Steam

Global Occult Coalition, Heroes Wiki

Foundation Facilities - SCP Foundation

Extracting Knowledge Base Facts for Entities from Sources such as Wikipedia Titles and Infoboxes

Wikimedia Foundation website - Meta

World Wide Web - Wikipedia

Groups Of Interest - SCP Foundation