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.
zootier sootier souter stir cider citer stair steer stere seater stereo striae setter suiter satire sitter sautoir seedier stourie zedoary
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