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.
caber cuber cobber gabber cobbier gabbier cowberry kabar gabbro goober kbar
caber taber saber cuber gibber tubber jabber rubber cobber hobber liber weber lubber nabber labra nubbier kabar fabber gabbier sobber shabbier tuber jiber fibber rubier jobbery bear beer sabra knobbier suber dauber daubier dobber ribbier libber robber nobbier goober babier lobber bobber labor bier mobber knubbier ribber sober bibber jibber abri bobbery fiber giber gabber dubber ribier webbier tubbier tabor dibber daubery dabber sabre bibbery sabir cyber jobber rubbery cobbier robbery chubbier yabber
cab cabbie cabby cube scab scabby