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.
bros brios broos brose brosy brows biros burros browse bras burs bris bars borrows barrios burrows barrows brews bries braws buhrs brass boars braes byres birse beers brays boras bores bursa brees boors biers birrs briss burse bares burrs bears buras brughs bourse buries bursae borzoi brassy burghs braise barres boreas bruise hybris berries bewrays brassie bureaus bourrees brace braza braze
biros bros chiros charros toros taros duros saros burros eros euros faros pharos heros giros gyros guiros kouros morros pros pyros ceros zeros hydros tiros tyros cheeros churros