I use Eclipse and it provides an editor for Ant: syntax highlighting, command completion, keyword suggestion, etc. I suspect that NetBeans, IntelliJ IDEA, and other Java IDEs also provide this capability.
Notepad++ will give you syntax highlighting and with the XML addon will get you block completion (example: you type "<copy>" and it will fill in the "</copy>"). And it lets you create code snippets (such as the <copy> or <target> blocks. But you won't get the auto suggestion and auto complete that IDEs will give you.
There's probably something available for Emacs, as well. But then again, there are those who claim that Emacs is an OS that pretends to be a text editor.
One of the most odious afflictions that Business has inflicted on the modern English language is "pro-active". Most of the time it's simply redundantly used in place of the simple old word "active". And a good deal of the rest of the time it means "You're not overworked enough yet, so go out and find more!"