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.
sarsen sarracenia sarcina sarcinae sericin soricine
hoarsen coarsen worsen sarsen reseen resewn risen arisen arseno boursin foreseen greisen kerosene parson person rerisen arson
sarees saris saros sauries sears sers sirs soars sris tsars