Top 20 NuGet contracts Packages

Provides argument validation methods and Code Contracts helpers.
Astral core interfaces and utilites
High level data service contracts
SSO360 Base DC
Decision Tree Base DC
Exposes facades for common Logging, Configuration, and DI components to extract dependencies as well as utility methods for logging inside of Linq expressions.
Contains Verify - fast and extensible class for simple method arguments asserts. Example: Verify.Args(new { param1, param2 }).NotNull()
DDD.Light.CQRS.Contracts
DDD.Light.Repo.Contracts
Portable version of the CodeContracts package.
Mobility Platform CrossCutting Contracts
Reports diagnostics, helping you to annotate your source tree with (Item)NotNull / (Item)CanBeNull attributes. See also: https://www.jetbrains.com/resharper/help/Code_Analysis__Code_Annotations.html You need Visual Studio 2013/2012/2010 and Resharper v8 or higher to use this analyzer. See package ...
Helper package to use with build servers. Contains all CodeContracts binaries and integrates into MSBuild build process.
Code Contracts provide a language-agnostic way to express coding assumptions in .NET programs.
DefinitelyTyped.NET is a utility that can generate typescript classes, interfaces and enums, based on .net types.
Trivial Ast
Package Description
Commonly used classes and contracts
Support for common message contracts.
Contracts for Procurement.