I am a great fan of Sleepless. (Though I am curious as to why versiontracker has this listed in their MacOS Classic side.) Right now I have the new version of sleepless on and my laptop lid is down. (I have a Studio Monitor attached to the laptop.) This works just fine. Is just what I need for presentations where the lid gets in the way.

Sleepless is great for quickly changiing settings so that the Mac does not go to sleep during backup or when I am running simulations.