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.
combe coombe comb come comae combo coomb commie coma came gambe kombu commy gombo comma cambia cammie cumbia caeoma cam cum cwm goombah goombay camo gamb game kame
combe bombe coombe womb kombu tomb comae zombie comb some coomb romeo come nome combo mome gambe imbue jambe homie homey home bomb biome gombo lambie gnome pome roomie zombi dome tome womby