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.
ruderal retral retrial readerly retrally redrill writerly
ruderal federal derail drail drawl dural bedrail lateral literal material nadiral readerly retral sidereal sudoral
ruder rudery rider rudder cruder order prudery