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.
brood broody broad byroad burd brad bird bred bard barde braid bared bored breed board beard bread bride brede burdie burred bready birdie boride barred birred buried hybrid berried burrito bourride bort brat brit brut
brood rood rod period trod hydroid zeroed sarode proud neuroid road aroid rode root roto crowd cheroot sheroot corrode arrowwood broad sciuroid sarod trode toroid corrody droid broody byroad joyrode choroid corody prod viroid parody erode grody shroud