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.
briquet briquette barquette brocket brigade burkite bricked bracket burgout brookite breakout barricade bract barracouta barked braked burked borked bearcat beraked bragged brocade brooked
briquet roquet croquet paraquet paroquet parquet