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.
rozzer razer rezero rouser rosery rooser rosier racer raser razor ricer riser racier raiser rosary rosaria reassure reissuer
buzzer whizzer quizzer rozzer fizzer jazzer dizzier fuzzier mazier boozer oozier beezer fizzier zero sizer vizier sizier doozer dozier lazier whizzier rezero wheezer mazer queazier boozier razer hazier fozier gazer cozier hazer wheezier geezer seizer gauzier jazzier muzzier dozer woozier