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.
echoer etcher euchre
shoer echoer kasher butchery lecher musher gusher cashier hatcher batcher catchier ashore beechier butcher gasher fisher matcher fishier itchier cosher hitcher beachier mosher bitchery botcher lusher bushier botchier etcher poachier pusher chichier witchery dasher watcher washer rusher tushery toucher reechier tetchier teacher dishier pitchier patcher seashore ocher pisher cushier nosher peacher rasher leacher posher quasher mishear basher ashier cutchery lechery sheer shier moocher cheer hatchery coacher ichor fishery masher fetcher botchery shear shore bitchier catcher busher voucher josher gaucher mouchoir leachier choir gushier chore achier meshier pitcher kosher poechore lasher pushier patchier mushier coucher peachier notcher rushier ochery dashier poacher ditcher techier reacher tocher touchier richer usher washier zoochore wisher witchier pouchier shusher