Top 20 NuGet netfx Packages

Tests for netfx-Patterns.QuerySpecs
Provides the core APIs to implement a message store.
Provides an easy way to implement the singleton (anti?) pattern so that it is ambient-safe, propagates with a call context and can be overriden per ambient (i.e. in tests).
xUnit tests for netfx-System.AmbientSingleton
xUnit Tests for netfx-System.AppDomainData.Tests
Implements the core NETFx ISerializer interface using the .NET framework runtime BinaryFormatter.
xUnit tests for netfx-System.BinarySerializer
xUnit tests for netfx-System.BsonSerializer
An IClock interface and default implementation SystemClock to make time-based logic testable.
xUnit tests for netfx-System.Clock
AddRange extension method for ICollection<T>
xUnit tests for netfx-System.Collections.Generic.CollectionAddRange
xUnit for netfx-System.Collections.Generic.DictionaryGetOrAdd.
Traverse an enumerable tree, depth or breadth first. Example: var dirs = new DirectoryInfo("C:\\") .Traverse(TraverseKind.BreadthFirst, dir => dir.EnumerateDirectories());
xUnit Tests for netfx-System.Collections.Generic.IEnumerable.Traverse
Provides strong typed access to ComponentModel attributes by using the ComponentModel() extension method over a type, method, property, etc.
xUnit tests for netfx-System.ComponentModel.Attributes
DescriptionResourceAttribute, DisplayNameAttribute, CategoryResourceAttribute, etc.
xUnit tests for netfx-System.Dynamic.Reflection.
An implementation of the core NETFx ISerializer interface that provides stream compression/decompression on top of another serializer.