You can check out the 3D Engines Database over at DevMaster.Net; it is pretty comprehensive and up-to-date.

Here's the Delphi list (13 Engines):
http://www.devmaster.net/engines/list.php?fid=6&sid=4

and the Pascal list (5 engines):
http://www.devmaster.net/engines/list.php?fid=6&sid=5