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.
coerces cruces corses courses carices coriaceous curacies crises crozes crases crazes curses cruses carses gorses graces cresses kerseys cruises coryzas creeses creases crazies crosses caresses carouses cuirasses crasis crisis grazes krises grasses greases grosses grouses
coerces tierces merces terces pierces trices braces forces rices mercies varices perses murices farces graces cruces verses recess precess carices traces boraces terraces hyraces erses sources cercis prices races farcies orrices truces