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.
tabby tubby tab tabu toby dauby dobby taboo dab tub daub doby tuba tube
gabby tabby yabby shabby cabby aby hobby bobby webby ribby bubby nubby knubby abba abbe abbey baby lobby hubby cubby rubby gaby dobby knobby dauby tubby nobby chubby cobby rabbi