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.
towny town tony toney downy tawny ton townie tawney townee toon down tone tiny teeny tauon tinny tonne tunny toonie tannoy tun tin tan don tonneau ten deny dona done tain teen tine tuna tune dawn tyne
downy towny own mown phony phoney fawny bony bonny cony boney mony pony awny tawny tony lown coney winy snowy goony sawney sonny honey gown looney loony money moony known wany lawny peony down gooney sown tawney toney town shown