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.
krait kraut karat korat karate grit kart grat crit groat great carat crate griot grate kurta create curite carate curate gritty gardai cowrite cart curt grad grid grot
krait trait rat lariat writ cerate merit errata britt curate gardai berate write whereat verite aurate pirate grate fruit crate ferrate carate hereat forrit norite chariot trite hydrate drat pyrite derate deaerate braid cirrate rarity burrito cowrite frit griot prate borate groat parity brat irate airt karate grat raid narrate periti carat gyrate kraut rato barite orate heriot crit grit ferrite verity frat brit fritt jurat curite ferity korat aerate riot lyrate rite bruit rate raita yperite karat great phorate serrate prat diorite purity droit rewrite territ cerite treat urate derat worrit charity