Software to find the most occurring unique words in a file [closed]

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I remember once visiting a website that would present a book/novel summary in the most interesting way. It would show a list of words that were repeated most often in that book and which were unique/uncommon. In other words, it would show the maximum frequency words but not common words like the, I, you etc. Then it needs to have things like showing a phrase if that is repeated often. For example, Treasure Island would probably have words like - pirates, storm, fought, treasure, pieces of eight, island, Long John Silver, Jim, omen etc.

This was the most interesting way to quickly get a good feel of whether I would like reading that book or not. I cannot find that website anymore. So I thought of looking for a software that would do the job. I have a couple of books in pdf and doc format which I would like to have analyzed. Does anyone know of a good tool/software out there that can do this?

Of course I could probably code this myself but it sure would be nice to not reinvent the wheel. So my question is, "do you know of any such software?"

Thanks,

开发者_高级运维Mugen

(bookworm)

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Try Wordle.net. It creates tag clouds and renders them in different ways.

Answer attribution: Dave