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.
barm barmy barium barmie berm brim barroom broom berme brome bream bromo brume berime bireme brahma broomy brumby berhyme bohrium
arm barm farm harm rearm warm charm