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.
boobies bobbies boobs babies booboisie bobs bubbies booboos babes buboes baboos bawbees beebees baubees boubous bibs bubs babas babus bibbs bubus bubbas babassu
boobies doobies tobies dobies gobies loobies obes obis goboes rubbies bubbies rabies newbies obese obeys lobes obias babies oboes bobbies dobbies tabbies rubies cubbies gabies robes rabbies phobias phoebes hubbies lobbies hoboes cobias hobbies kebbies cabbies yabbies bes bis