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.
raisin raisiny resin ricin risen rosin raisonne reassign rosiny reason resiny resign rusine resawn reseen resewn resown
raisin seisin sin hisn poison paisan casein casino fusain hessian fission foison eosine ficin lysin session mission cassine eosin sain reassign resin ricin rosin rusine sasin essoin cousin basin assign bison cosign lysine sign cuisine cosine cassino casini cassina liaison sine quassin sinh scission passion ossein puisne raisiny resign resiny risen rosiny cession seizin design
rais raise ras praise prise wrasse frass grassy crissa brass crass frisee trass rise braise braize erase arise briss airs brassy prissy reissue rias raias bras eras grass cris iris frise fraise rase reis bris raws rays brassie kris prase priss sris urase