I am simply using Jaro-Winkler to get a similarity factor of 2 strings. I'm using this for name and address comparisons and doing my own score aggregation and weighting.
I first tried Fuzzy String. Unfortunately, it has several issues preventing it from working properly. Even among these issues, I found other examples that caused the Jaro-Winkler algorithm to go into an infinite loop. It's funny that this package has a 5 star rating, because for my use case, only using Jaro-Winkler, it failed miserably.
Then I tried BlueSimilarity. This package also had issues loading a BlueSimilarity.Interop.dll. At this point I was tired of troubleshooting and just wanted a solution that worked. Besides, on nuget the project site is a broken link. Man.
Finally I tried SimMetrics-TextFunctions. This worked really well! I had a few small unit tests to simply verify that the bugs in FuzzyString are not in this implementation. Awesome!
EDIT: Wow. I found out 7 months later that this package does indeed have a bug. It is easy to work around, but I consider it a bug non-the-less. This code, with a space prefix on one of the strings returns with a zero similarity.