Styleworks is a free tool for editors for the creation and management of style sheets and house styles in one place.
Styleworks users can log style decisions as they edit (terminology, capitalization, abbreviations, italics, and more).
Styles within Styleworks can be exported and used automatically with PerfectIt. Styleworks allows you to write each decision once, in plain language, and then it works out the find-and-replace details for you, including plurals and related forms.