Dictator
Dictator is a program for on-screen reading of text files, developed with the intention of making it easier to read some of the fine electronic texts available on the net, such as those produced by The Gutenberg Project. ... Dictator provides an alternative approach called Rapid Serial Visual Presentation (RSVP) in which words are displayed consecutively in the same place at a user-controllable rate. This method prevents unconscious re-reading of adjacent text and decreases the tendency of the reader to oralise the text, allowing for increased reading speeds. RSVP also permits the use of larger fonts for text display which improves text clarity. While it does take some getting used to, with a little practise you may find that reading with Dictator becomes faster and easier than reading from a book.
