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.
gummites gummatous committees gambits gametes commits gumboots commutes comities comtes gamuts comates gomutis comedies commodes gambades gambadoes coembodies commodious comets
boehmites limites samites somites gummites mites smites fomites gemmates reemits mammitis mitis mitts limits hamates comities omits demits humates vomitus mates commits summates symbiotes demotes comates dimities summits diamides gemotes imides remits remates vomitos gambits mutes motes amities metes emotes amides gametes emits comtes commutes remotes ambits roommates vomits teammates