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.
arson arisen arseno arsine arsino
parson arson person orison whoreson grison treason sarsen prison persona coarsen garrison hoarsen frisson boursin resown reason warison worsen
ars airs ares ariose ariosi arioso arise arose arouse arrows arse aurous