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.
carmen carman carmine crewmen quarrymen cremini crimine crimini criminy kairomone quarryman crewman
airmen germen chairmen carmen mermen doormen barmen rumen dairymen ferrymen cerumen freemen firemen quarrymen crewmen ramen harmin airman wiremen vermin foremen foramen dormin duramen merman carman premen doorman barman german firman jurymen sermon chairman draymen choremen
caramba carom carrom corm cram crambe crambo creme crime crumb crumby crummie crummy karma