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.
outtrot outroot outwrote outrode outtrade outrate outread outride outwrit outwrite
outtrot trot tarot torot trout attrit beetroot outroot patriot seatrout whittret
ottar otter outer outre outrow outthrew outthrow