I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
bouquet baguet bucket bugout backout baguette begat begot bigot becket bogged booked bucked bugged biggety boycott
bouquet quiet coquet piquet roquet toquet chaqueta