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.
keiretsu karts greats curets carets kraits quirts kurtas korats cruets krauts greets karats garrets creates keratose curettes carts grots crits creds grits courts credos creeds curtsy greeds griots groats grouts carats cairds quarts
keiretsu rets trets aretes barrets berets burets ferrets frets cruets carets curets garrets greats greets terrets treats turrets