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.
reattack retack retake retag redock retook
reattack attack tack tacky bittock buttock futtock mattock outtake retack stack
ratty reata bratty fretty create great pretty treat treaty rat ret