There are many texting slang dictionaries online to help decipher texting language. One website that helps define texting slang is Lingo2Word.com, which claims to have an online text dictionary "for the meaning of those words you are too embarrassed to ask."
One of the oldest dictionaries that provides definitions for texting slang is Urbandictionary.com. This site provides the definitions for all types of urban slang.
Webopedia provides definitions for texting slang and abbreviations as well. Noslang.com translates text messages to proper English and even takes out profane words. Chatworddictionary.com provides a list of chat and text terms, abbreviations, and emoticons.