If English class gave you fits, WhiteSmoke wants to help. The company develops and sells software that's like having your very own grammar, spelling, sentence structure, and style teacher living in your computer. Its Writer program improves English text for native and non-native writers while Translator goes back and forth between nine languages. WhiteSmoke customers access the tools through browser toolbars, smart phones, or on personal computers through Microsoft Word and other word processing. It offers half a dozen versions of Writer targeted to business, legal, and creative writing and a review feature to help users learn. Formed in 2002, WhiteSmoke filed to go public in 2011.