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.
bals bails bawls balls baals bales balas balsa ballsy bialys bialis bels bailees bailies bialies ballies baileys blows blase bolus blues bulls blahs bolls bliss blaws bolas boils bless bells boles buhls bolos biles bowls bills blousy belows boules belies blouse boylas blueys belles bylaws bluesy blowsy belays boulles bullies bowless billies bellows bellies bullous bilious billows boughless blaze
aals heals shoals wheals teals dials dals seals rials peals pals meals goals gals coals jouals vials als veals phials foals bals baals reals sals zeals deals duals weals sheals sials