This is a tool that checks Word documents and plain text against user-defined house style rules. It's less about 'good' style than about consistency where you could spell words in different ways (manoeuvre and maneuver, for instance).
Rules are saved in XML using a basic schema. There are some default sets of rules (British spelling, American spelling, -ize, etc.), but they're by no means comprehensive.
If I'm not making much sense, here is a screenshot:

The report opens in IE and lists all matches with context.
If you like, you can go to the
homepage or
download the application and the source files.
If you're downloading the source files, you will need the class library as well as the application source files. (That's where I'm storing my automation classes for Word and IE, the Win32 wrapper classes for the windows and controls, in short everything I want to use again.) The application compiles without warnings using Borland's free tools (make -fmakehousestyle).
It's very much version 1.0, but the basic functionality should be there. I'd be grateful for all feedback!