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.
sheltie shelta shelty shelled chelate shalt shield shallot cheloid sialid chield shaled chalet chalot should challot chiliad shauled shawled shilled shoaled shooled sialoid
sheltie pelite chelate delete delate saltie relied relate belied elate gelati gelate velate elute elite elide kiltie
sheal sheila shell shelly sheol shiel