Add spell checking value to any textual application (email, word processor etc) with a couple of lines of code. RapidSpell Desktop can also be used in non GUI contexts using it's spell checking API. Written for dotNET in C#, RapidSpell uses combined and separate 140,000 word U.S. & U.K. dictionaries (and user dictionary), multi-threaded GUI and a powerful suggestion engine. Canadian & Australian English dictionaries are available free on request.