Top 20 NuGet constant Packages

SteadyContact is a fully asynchronous SDK designed around the Constant Contact API v2
InContact is a fully asyncronous and validatable SDK designed around the Constant Contact API v2
Constant Case (constant-case) binding library for Bridge.NET projects.
The class4js module is for class-driven development in JavaScript. It allows to emulate classes in JavaScript. Module is based on ECMAScript 5 standart and implements open/close principle: "A module should be open for extension but closed for modifications".
A type-safe enum pattern (aka "smart enum") implementation including "smart constant" as well.
.NET implementation of CDB (Constant Database).
It is a function that allows you to easily switch execution environment constants using the application configuration(app.config) file.
A wrapper around the ConstantContact API
A MathParser using RPN supporting User-Defined Functions, Operators, Variables, Conditional Operators and more...
An extensible utility to convert, identify, and flip string case.
IRIMC Devtools Constant