https://stackoverflow.com/questions/6051698/how-to-use-google-diff-match-patch-c-sharp-library
https://stackoverflow.com/questions/138331/any-decent-text-diff-merge-engine-for-net
https://github.com/google/diff-match-patch/blob/master/csharp/DiffMatchPatch.cs
Closeness of 2 pieces of text. (%)
compare the start
Compare the end
Compare the middle
Looking for overlap.
And
Find recurring words/phrases/sets of characters in a set of strings.
https://stackoverflow.com/questions/12089967/find-difference-between-two-strings
https://github.com/google/diff-match-patch
https://stackoverflow.com/questions/52162091/detect-differences-between-two-strings
https://stackoverflow.com/questions/3343874/compare-two-strings-and-get-the-difference
https://stackoverflow.com/questions/33886103/how-to-find-recurring-word-groups-in-text-with-c
https://www.codeproject.com/Articles/13326/An-O-ND-Difference-Algorithm-for-C
JavaScript fuzzy search
https://stackoverflow.com/questions/23305000/javascript-fuzzy-search-that-makes-sense
http://www.joyofdata.de/blog/comparison-of-string-distance-algorithms/