FontDoctor for Windows

From Morrison SoftDesign:

FontDoctor is the industry standard software for font problem diagnosis, repair, and organization. FontDoctor will scan font folders (on local hard drives or over a network) to locate and repair common font illnesses, including missing Postscript fonts, missing bitmaps, corrupt/damaged fonts, mixed fonts types, and lots more. FontDoctor can sort and clean-up existing font folders into a neatly organized font library. Now your fonts can be easily organized by font name, family name, alphabetically, or by a whole host of other flexible font organization options. Have fonts that worked before upgrading to Service Pack 1 or above? FontDoctor will repair those fonts so that they will work with Windows XP SP1 or above.

Version 2.0 added font archiving feature, repair feature to upgrade older TrueType fonts to Windows XP SP1 compatibility, fixed bug with A: drive message, NilObject bug during organization, and low disk space message bug.