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.
ragout roquet roquette react recut racket ragged recoat rocket rogued rugate rackety raggedy regatta requite hyracoid
bugout ragout gout dugout pigout got gut cookout baguet sickout begot agouty gigot knockout faggot goat checkout maggoty takeout fagot backout lockout lookout bigot agouti scout zygote magot faggoty maggot gouty shakeout
rag raga ragg raggee raggy brag braggy ergo frag crag craggy drag draggy