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.
sasin season seisin cession session scission sozin seizin sozine
sasin basin sin eosine season essoin mission quassin casein casini casino cassine fission lysine diazin cosign ossein hessian peasen raisiny reassign resin rosin rusine cousin session mason lysin assign cuisine fusain cosine sinh sine sign sain cassina eosin niacin cession cassino passion raisin reason resign resiny rosiny scission seisin design weason
saice sass sassy saws says seas assize basis easies oasis saices sasses sassies