Use Grammar Anywhere:
For programs that lack spelling and grammar check, or that have English spell check, but lack Legal, Medical or foreign language spell and grammar check. On the Internet when composing text on the web, typing text in search engines, filling out forms, Internet data entry, posting forum messages, discussion groups, and writing blogs.
When chatting using Yahoo! Messenger, ICQ, Skype Chat, or another instant messenger.

Using Notepad, WordPad, Outlook Express. For programs that have spell check for the entire main document, but leave out spell check and grammar check in other text-spots. For example, GrammarAnywhere adds spell checking and grammar checking to the subject line of emails, page title and page description in FrontPage, and Expression Web. Distribute with your own custom applications, without royalties, for a low onetime fee.

For individual use, or for your entire company, with an unlimited number of users for a small onetime unlimited license fee.