Top 20 NuGet pcl Packages

Ptv is a Portable Class Library which provides .NET-based wrapper around the Public Transport Victoria APIs that have been published at http://data.vic.gov.au.
Microsoft PRISM 4.1 ported to Portable Class Library and Microsoft.Composition. Namespaces are not changed for convenience.
AppRater Plugin for Xamarin.
PCLMock is mocking framework in a PCL, making it usable on platforms such as iOS and Android.
Abstractions of specialized collections required by the Nuclectic Framework. Forked from the popular Nuclex Framework.
Abstractions that provide support functionality to the Nuclectic Framework. Forked from the popular Nuclex Framework.
Abstractions supporting extending MonoGame with additional geometry operations. Forked from the popular Nuclex Framework.
Contains basic contracts for a key value pair storage system
A portable text and binary serialization library for flat POCOs
A portable animation library
Spotify SDK Xamarin bindings (Xamarin.Android and Xamarin.iOS)
SoundCloud SDK Xamarin bindings (Xamarin.Android and Xamarin.iOS)
Samsung SDK Xamarin bindings RichNotifications (Xamarin.Android)
Samsung SDK Xamarin bindings ProfessionalAudio (Xamarin.Android)
Samsung SDK Xamarin bindings Pen.Light (Xamarin.Android)
Samsung SDK Xamarin bindings Pen (Xamarin.Android)
Samsung SDK Xamarin bindings Pass (Xamarin.Android)
Samsung SDK Xamarin bindings MultiWindow (Xamarin.Android)
Samsung SDK Xamarin bindings Motion (Xamarin.Android)