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.
bison boson bizone bassoon basin bosun besnow
bison liaison poison foison son disown seisin scission lesson cession sone reason soon puisne caisson passion essoin mission risen season fission sown session hyson boson resown cion raisin paisan mason bassoon scion meson hisn gossoon weason
bis bias bioassay bios bise bibs ibis obis