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.
brumby barmy brume barium broomy bohrium barm berm brim berimbau brome bromo berme bream broom barmie berime bireme brahma barroom berhyme
brumby crumby rumba rummy crumb crummy