This is a port of the original porter2stemmer for .net standard, with unit tests in .net core using nunit 3
An implementation of the Porter2 stemming algorithm in C#
http://snowball.tartarus.org/algorithms/english/stemmer.html
A stemmer helps convert similar words into a common form so that they can be accurately compared, regardless of tense/part of speec/etc.
For example:
friend -> friend
friendly -> friend
friends -> friend
friend's -> friend