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.
sootier zootier souter stir stere stair steer suiter sitter stereo setter satire seater striae stourie seedier sautoir star hysteria sautoire stour stray citer stria cider story seder stare strew sitar store straw satyr sutra sudor stoure siddur suitor satara seeder stoury strawy storey starry satori suture sadder
footier zootier dotier rootier hootier sootier tier bittier goiter souter moodier dottier rattier battier ruttier bootery noter couter mitier voider potter knotter rotter hotter nettier coater goutier shooter chattier wittier touter toter titer jotter pouter haughtier rooter looter cotter pettier outer oater metier jettier gnattier quoter loiter cattier knottier footer nattier pottier guttier cottier otter hooter peatier voter dotter lotter nuttier boater powter fattier rioter matier doter doughtier hoodier cooter puttier meatier poutier pitier router mooter nittier tattier tooter totter whitier woodier shittier shouter