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.
probes prebuys
aerobes robes probes derbies sorbs carobs robs orbs corbies caribes freebees rabbies rabies rebbes ribes rubbies rubies arrobas barbes barbies bribees bribes forbs rubes freebies darbies grebes tribes