The Zeus for Windows IDE, Version 3.96o is now out:
http://www.zeusedit.com/download.html
Zeus does D language syntax highlighting and code folding and
can be configure to for Phobos/Tango code completion:
http://www.zeusedit.com/forum/viewtopic.php?t=1164
Here is the Zeus feature list:
http://www.zeusedit.com/features.html
NOTE: Zeus is shareware with a 45 fully functional trial period.
Jussi Jumppanen
Author: Zeus for Windows IDE