A-vs-An (nuget): Find the english language indeterminate article ("a" or "an") for a word.  Based on real usage patterns extracted from the wikipedia text dump; can therefore even deal with tricky edge cases such as acronyms (FIAT vs. FAA, NASA vs. NSA) and odd symbols.  (Requires .NET 2.0 or higher)
Keywords: english|NLP|text-processing|library|indeterminate-article.