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.
rebus rebuys rebs rubus rebbes rubious rubs robs ribs ribes robes rubes rabbis rabies rebozo rubies rabbies rubbies
phoebus zebus rebus bus phoebes tabus rebuys bubs niobous ebbs rebs nebs hebes habus buys gibbous abuse busy buss beaus boubous rubus babus feebs debs bubus webs