Is there a program where it can search for duplicate names in numerous documents?

Question

I have more than 3000 documents and I want to see the names that are most common in all of them. Is there a program that can search for the names that are most frequent in numerous documents?

Answer 1

Ssounds like you need some software that does UNSUPERVISED machine learning, like clustering..

Worst case we can write something that reads every single token in the file and returns frequency table