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.
somite smite samite smit smote somata summit summate someday smut symbiote seamed seemed smutty summed zoomed sambaed simioid symbiot
boehmite samite fomite smite somite gummite mite commit symbiote smote reemit limit vomito amity gambit dummied vomit diamide comate emote jemmied amide gemmate comte emit smit remote summate gamete mummied shammied demit chammied humate mote mute demote omit mammate ramate hamate jimmied gemote ambit dammit dimity teammate mitt mity mete roommate mate remit remate commute summit imide comity shimmied