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.
obsess
obsess bosses diabases subbasses soubises riboses bossies ibises booboisies abuses abioses basses beses biases biasses bises bases bouses abysses debases subbases rubasses rebuses cabooses phoebuses abscess baases abbesses abases busses busies buses bowses tabbises
obas obeahs obes obese obeys obis oboes