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.
curacies crazies graces crises crazes crases cruces crasis curses cuirasses cruises carices courses coerces creases coriaceous gracioso graecize gracious curassows corses carses cruses krises crisis crozes grazes greases grasses creeses crosses coryzas grecize cresses caresses carouses grazioso carassows gorses
piracies curacies terraces praises mercies graces crazies fraises farcies farces braizes braises braces boraces raises races hyraces reraises traces