Akade.IndexedSet

A convenient data structure supporting efficient in-memory indexing and querying, including range queries and fuzzy string matching.

Towel

This library gives data structures, algorithms, mathematics, metadata, extensions, console, measurements, and other useful stuff

C# Algorithms

A plug-and-play class-library project of standard Data Structures and Algorithms, written in C#. It contains 75+ Data Structures and Algorithms, designed as Object-Oriented isolated components. Even though this project started for educational purposes, the implemented Data Structures and Algorithms are standard, efficient, stable and tested.

Algorithmia

Algorithm and data-structure library for .NET 3.5 and up. Algorithmia contains sophisticated algorithms and data-structures like graphs, priority queues, command, undo-redo and more.

OneOf

OneOf provides discriminated unions for C# with exhaustive compile time matching.