Recently, research has focused on developing algorithms which are capable of recognizing grammar errors based on the context of the surrounding words. Context-based grammar checkers appear in Microsoft Office 2010, Microsoft Office 2007,[4] Google Wave,[5] Ghotit Dyslexia Software,[6] Grammarly,[7][8][9] SpellCheckPlus.com, GrammarCheck.net, Ginger Software, VirtualWritingTutor.com, and WhiteSmoke .