Top 20 NuGet attribute Packages

AttributeRouting for ASP.NET Web API lets you specify routes using attributes on your API controllers and actions.
A simple persistence library. Simply mark properties with attributes and they are persisted in registry.
Revival of [Index] attribute for EF Core. (with extension for model building.) [NOTICE] EF Core team said "We didn't bring this over from EF6.x because it had a lot of issues" (https://github.com/aspnet/EntityFrameworkCore/issues/4050) You should consider well before use this package.
Easy for DI register, auto register services, decorate service with attribute
Generic Attribute Based Access Control Implementation for c#
Annotation class for Elemental Programming: provides Dark element.
Annotation class for Elemental Programming: provides Light element.
Annotation class for Elemental Programming: provides Dark and Light element.
Core classes for Elemental Programming.
Abstractions for MR.AttributeDI.
lib12 is set of useful classes and extension created for .NET framework
AttributeRouting for ASP.NET MVC lets you specify routes using attributes on your MVC controllers and actions.
Core functionality for all AttributeRouting packages.
Core functionality for AttributeRouting ASP.NET MVC and Web API packages.
Inspect the usage of attributes per entity
Code generator for [Record]-marked types. Automatically creates backing code (constructor, With- mutators, deconstructor to tuple, Builder nested type etc.) for immutable record classes. This package references all required and recommended (analyzers) packages. See project site for installation inst...
Metadata/Attribute library for the FreecraftCore.Serializer. This library provides the attributes required to markup DTOs.
Core functionality for AttributeRouting Web API packages.
Simple attribute based command line parser.
Allows emitting arbitrary assembly attributes, compatible with SDK-style projects and classic ones. Usage: declare @(AssemblyAttribute) items to include, such as: <ItemGroup> <AssemblyAttribute Include="[ATTRIBUTE_FULL_TYPENAME]" _Parameter1="[CTOR_ARG]" _ParameterN="[CTOR_ARG_N]" /> </Ite...