Ultralingua Grammatica Spelling and Grammar Checker - English for Windows

Make sure you're spelling and grammar are correct thanks to this nifty application. The program offers the following features:

• Sophisticated error recognition, with extensive suggestions.
• Detection of subtle problems in grammar, syntax, punctuation
• Includes conjugated verb forms, slang, and even technical language.
• Use a single keystroke to activate Grammatica from within other applications.
• Conjugate verbs in every tense!
• Add other language modules -- even add your own entries!
• Ergonomic interface
• Tight integration with Microsoft Word (among others)
• Multilingual interface