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.
arete ariette aureate art aurate airt arietta arty aired aorta aortae arid
arete rete terete ret phorate ferret write berate curet jereed breed aerate buret freed carate orate laureate rede caret grate retie borate narrate rate irate rite garret ferrite greed diorite whereat turret surety tret treat pirate terret hydrate carte proette cruet deaerate create cirrate reed rewrite cerate cowrote pyrite karate prate hereat curite barrette garote pardee garrote hereto yperite great preed dreed jerreed wrote serrate brede greet ferrate gyrate lyrate quarte cerite baryte creed curette crate aurate ariette aureate verite brute barret curate ferrety syrette derate cowrite barite fret beret pirouette norite pureed rewrote rote torte forte treed trite burette urate whereto