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  • Lines filter by number

    This online calculator filters lines of text by removing designated lines or, you can say, leaving only designated lines

  • List reverser

    This online calculator reverses lines of text

  • Numbered list maker

    This online calculator numbers lines of text

  • Random Letters Generator

    This online generator just generates specified number of symbols, randomly selecting them from given set of symbols

  • Text fitness

    This online calculator computes text "fitness". That is, how similar the given text to other texts written in English language.

  • Text fitness (version 2)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses frequencies of unigrams, bigrams and trigrams to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • Text fitness (version 3)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilites with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • List intersection

    This calculator parses list using regular expression, then counts unique matches and lists them in decreasing order