C# port of Google's common Java, C++ and Javascript library for parsing, formatting, storing and validating international phone numbers. http://code.google.com/p/libphonenumber/
NuGet package for libphonenumber as a UWP class library. This is only a temporary solution until the original project takes over this aspect of releases.
Supporting features to go along with libphonenumber-csharp above and beyond the feature set of Java libphonenumber. Adds functionality better matching C# paradigms, etc.