TwentyDevs 

A simple library to detect mimetype of a file, stream or buffer array via magic numbers in the header content. It contains over 480 samples that as hardcoded in the library. Detect mimetype of an extension... More information

Result is a library for web APIs that brings all responses in a unified and consistent form.

ResultCore is a library to deserialize unified responses from web apis that using Result library.

in this package you can check model validation with filters in .net core filters and tempdata are esential in the AutoValidation