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.
horde hoard horrid hayride herd hard hared hardy hired heard hairdo haired heired hereat harried herried hurried hart hurt
horde bored moored corrade crude cord parade ordo pardie ride joyride fordo pride perdue sarode erode sored hayride burdie hydride fiord torte brede triode bourride weirdie bride word gourd charade lord chored grade boride board hoard gride orad corrode gored cored pardee oroide perdie irade joyrode forte prude pored sord rode rede deride rodeo tirade ford trade barde trode birdie whored rude wordy gourde chord merde shored
hoar hoary hoer hoorah hooray hora horah hour houri