Top 20 NuGet Linq Packages

it solves object-relational impedance mismatch in yours unit-tests. freeware, as is, no warranty.
A simple utility library
Reactive Extensions for Unity. This is .NET 3.5 subset of UniRx.
iNamespace.Core Class Library
A thin netstandard IQueryable interface over a simple odate endpoint. Compatable with odata endpoints powered by Linq2OData.Server
Support for unit testing of libraries based on the re-linq Frontend.
NCss is a small library aiming to parse and manipulate css sheets.
Set of extensions to Linq
Some web useful extension methods for .NET 4.0 or above
Some testing useful extension methods for .NET 4.0 or above
Simple paginator for Linq (EF)
Library for serializing, modifying and deserializing LINQ Expressions
JavaScriptLinq
System.Collections.Async.
Linq join to string extensions methods
LINQ method for a select with a condition
LINQlone is a reimplementation of LINQ to Objects for .NET 2.0 providing all the standard query operators of .NET 3.5. With C# 2.0+ LINQlone also activates extension methods and lambda expressions.
Moved to Science.Collections.MultiDimensional.Linq
Treenumerable is a general purpose library for enumerating, traversing and querying just about any tree.