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.
geezer geyser jazzer jazzier
beezer wheezer geezer dozier hazer mazer boozer zero seer cozier quizzer buzzer fizzer piecer rezero seizer sizier doozer wheezier whizzier muzzier boozier gazer fuzzier fozier mazier oozier jazzer jazzier gauzier queazier vizier hazier whizzer razer rozzer sizer dizzier dozer lazier fizzier woozier