Top 20 NuGet base Packages

A cross cutting concern library which just provides interfaces and base classes for the command design patterns.
A base library for creating cross platform game engines in .NET using OpenGL. Includes OpenGL, ImGUI, An MIT licensed ECS (https://github.com/isonil/EntityComponentSystem), etc. More features are planned (ex. ImGUI Hierarchy Controls) and the library will continue to grow as time goes on.
Cacche access abstraction
database access abstraction
Provides base implementations of an EF Core based repository (CRUD operations) and Unit of Work class.
Provides base implementations for a DAL-level entity, mapper for mapping between DAL and Domain entity and base Unit of Work class.
Idea.Entity Class Library
The base package for Alice platforms.
K-ordered, semi-random, distributed unique Id generator using base 36. Overcomes several weaknesses of integer, Guid and SequentialGuid identifiers.
Allows conversion of bases.
A base library for creating universal application with Caliburn Micro.
CHIMP base meta model
A base table manager for Assembly Software Developers
Provides a handful of helpful extension methods for use during verification of Microsoft Roslyn Code Analysis, Code Generation, and so on. The package is intentionally left bereft of specific unit test framework dependencies.