DEMON is a third-party add-on for id Software's
Doom-style series of games.
It organizes all your .LMPs in different categories,
thus enhancing your overview over your collection.
It also lets you play and record demos.
DEMON supports Ultimate and Final Doom and Doom II.
DEMON also has built-in support for replaying DHT-exams.
The .ZIP contains the sources (TP6.0)