Check Which Plugins Are Loaded

Use the command admin_version at the console and a list of all plugins loaded on the server will be generated.

e.g.

admin_version
Admin Mod version 2.50.60
* Plugin # 1: Admin Anti-Flood Plugin (v. 2.50.04)
  Auto kicks flooders
* Plugin # 2: Admin Base Plugin (v. 2.50.05)
  Basic Admin Mod commands.
* Plugin # 3: Admin Chat Plugin (v. 2.50.06)
  Commands for responding to chat.
* Plugin # 4: Admin Cheating Plugin (v. 2.50.04)
  Commands for noclip, teleporting, godmode, etc.
* Plugin # 5: Admin hlds_ld-style Map Vote Plugin (v. 2.50.04)
  Runs a chat-based interface map vote, similar to hlds_ld.
* Plugin # 6: Auto-Messaging Plugin (v. 2.50.05)
  Shows message on connect, as well as a message every x minutes.
* Plugin # 7: Admin Retribution Plugin (v. 2.50.06)
  Commands for getting back at llamas and cheaters.
* Plugin # 8: Fun Plugin (v. 2.50.05)
  Does silly stuff.