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.
razer razor racer raser rezero rozzer raiser racier riser ricer rosier rasure rosary rooser rouser rosery rosaria reassure reissuer
hazer razer mazer gazer sizier wheezer rezero doozer boozer seizer muzzier bazar boozier baser lazier gazar woozier whizzer beezer maser leaser lacer mazier jazzer queazier oozier racer gauzier cozier dozier hazier jazzier wheezier fuzzier dozer raser sizer vizier razor pacer lazar fozier rozzer teaser whizzier dizzier quizzer zero geezer laser fizzier facer fizzer buzzer macer chaser
raze razee race rase razz braes braza braze craze crazy graze rares uraeus