Portable Class Library for Xamarin Clients - Xamarin Component Store
Xamarin support IOS/Android/Windows Store/Windows Phone. A universal Service Stack client written using PCL would simplify code reuse. The code could be packaged up into a Xamarin Component Store download if necessary. Or be used in conjunction with MvvmCross for use in MVVM style coding and/or unit testing.
We’ve added PCL support for Android and iOS in NuGet packages, see this tutorial for using ServiceStack’s PCL libraries in Xamarin projects:
See this guide for adding NuGet support to Xamarin Studio to be able to easily reference NuGet packages:
Stuart Beattie commented
Do you have plans for a pcl client library that supports WP8.1, RT8.1 and Xamarin
Dylan v.d Merwe commented