What's the best IDE for DigitalMars D programming?

The best IDE to use for D is probably the IDE you use most often and are most comfortable with.

If you like Eclipse you should check-out DDT (D Development Tools) (formerly Descent)

If you like Visual Studio you should check-out VisualD.

There is also D for XCode but it seems to have fallen behind.

Another interesting option is Mono-D which adds nice D support to MonoDevelop. It works on Linux, Windows, and Mac.

Mono-D supports code completion, syntax highlighting, class browsing, error highlighting, 'Go to definition', intelligent code formatting, and more. If you like MonoDevelop, or need cross-platform support, it seems like a good choice.

MonoDevelop (and Mono-D) use the Visual Studio project format. It is possible that VisualD and Mono-D are able to share project files. I have not tested this.

EDIT: I just ran across this link that does a nice job of showing D IDE options including how actively they are developed.

Please try my D-IDE and check out if this IDE is the best one you'll find ;)

I haven't tried D in them, so you'll need to do your own eval, but:

• Slickedit 2009, and
• Zeus Editor

both claim full support for D.