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.
obeys obes obese oboes obeahs obas obis obias
abbeys beys obeys bes bys abys bobbies boobies cubes buys vibes jubes babies bays phoebes buboes hobbies bawbees abbess hubbies bees boys hebes baubees lowboys yabbies tobies obes tabbies doobies hoboes nabes jibes mabes rabbies beebees babes poboys rebbes ribes rubbies gybes abbes cowboys abyss bubbies kibeis dobbies pubes cubbies cabbies lubes kebbies kibbes goboes kibbehs kibes gibes gobies lobes syboes rubies rebuys loobies maybes newbies obese oboes lobbies gabies robes rabies rubes sabes daubes dobies doughboys tabes tubes yobboes