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.
atony atone atonia adown attain attune
atony tony betony muttony stony cottony buttony ton seton duotone rhyton atone photon ratton jeton toon newton stone downy bouton jitney mutton piton futon button ratany dittany tetany mouton chiton tone witney phaeton mutiny tiny toney jetton ratoon litany ketone niton town rattoon satiny stoney botany phyton muton towny baton puton cotton neoteny cyton beton chutney