The Zeus for Windows IDE, Version 3.96r release is now out:

  http://www.zeusedit.com/download.html

Amongst other things, this release adds code folding and syntax highlighting for the D language /+, +/ comments blocks.

A more complete feature list can be found here:

  http://www.prowiki.org/wiki4d/wiki.cgi?EditorSupport/ZeusForWindows

NOTE: Zeus is shareware

Jussi Jumppanen
Author: Zeus for Windows IDE