A text summarizer attempts to produce a condensed version of text while retaining the most important parts of the original text. Some summarizers extract the entirety of important sentences. Others actually rewrite the sentences into a briefer form.

MorphAdorner contains a very simple-minded text summarizer. The summarizer accepts an English language text and produces a summary by finding the (up to) 100 most commonly used words in a text (not including stop words) and outputting the first sentence containing each common word. This works adequately for short expository articles, but rather badly for literature.

You can try MorphAdorner's text summarizer online.