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.
brained brined branned brand barned brandy burned browned brant braunite brunet burnet baronet bornite brunette brent brunt burnt burnout
rained trained drained grained brained deraigned girned reearned cairned darned grinned brined araneid warned arraigned yarned learned ruined prawned earned reined reigned groaned kirned barned branned trined craned shrined groined yearned
brain brainy bran brin bairn borane branny brawn brawny brine briny briony bruin buran burin