Boba.cache is an ASP.NET Core library that simplifies cache management. It offers interfaces to handle all cache operations (get, set, remove,...), generate keys, and manage cache entries.

Pavalisoft.Caching is an open source caching extension for .NET Standard written in C#, which provides single unified API for both MemoryCache and DistributedCache implementations.

.NET library for in-memory cache management in ASP.NET application

a simple in memory cache implementation