Top 20 NuGet portable Packages

MetroLog StreamingFileTarget for Universal Apps (Win81+WP81)
Deprecated, use MvvmCube.
Portable serialisable expressions (alpha version - not for general use)
Object reference counting (alpha version)
SheetParser is a simple deserialization system for transforming tabular data into .NET objects, originally used to store lists of items, monsters, etc. in game asset directories. It supports both attribute-driven and procedural transformation of table rows into objects, with the ability to define cu...
System.Reflection cross platform package (plugin) to replace code usage in various projects like Xamarin.Auth
HolisticWare.Core cross platform package (plugin) with extensions and utilities for System namespace in Portable Class Libraries
Utilities for Gorilla Geek development
Utilities.Web.Mvc for Gorilla Geek development
Portable Client Library and HttpClient based OAuth library, including all platform(for PCL as .NET 4.0, .NET 4.5, Silverlight4, Silverlight5, Windows Phone 8.0, Windows Store Apps). This is an independently uploaded package and has source code from various sources aggregated under MIT License. Ori...
DiceNotation is a dice rolling library implemented as a PCL. It can be used to turn strings like "6d4k2 + 12" into actionable dice rolls and, using DiceNotation's `MinDieRoller` and `MaxDieRoller`, can easily compute the full range as well.
Unglide is a tweening library implemented as a Portable Class Library.
The framework for building Rezolver builders and containers from configuration.
Enables the construction of Rezolver builders from Json configuration files.
A library to make things cross-platform that should be. This package provides an assembly compatibly with the (unsupported) open source version of MonoMac.
Simple Code Contracts for every day!
Legonyte .Net provides portable utility classes and extensions methods for .Net framework
An open source transliteration library for .NET that can transliterate static texts and also can be used in "live" mode, which allows it to be connected with input fields. Supported platforms: NET 3.5, NET 4, NET 4.5, .NET Portable (.NET 4 / .NET 4.5, Silverlight 5, Windows 8, Windows Phone 8.1, Win...
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