Top 20 NuGet data-structure Packages

CodeJam is a set of handy reusable .NET components that can simplify your daily work and save your time when you copy and paste your favorite helper methods and classes from one project to another.
A data structure which allows fast random selection of items
Package provides C# implementation of algorithms in the "Algorithms" book (http://algs4.cs.princeton.edu/home/) and Robert Sedgwick's Algorithms course using Python (Part I and Part II), covering data structure, sorting, search, graph processing, string processing.
An implementation of a discriminated union data structure with pattern matching support.