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.
boyla bola bylaw boll bowl blah blae bole bolo blaw boil blowy bulla belay boule bullae boulle blooey billowy bal bel blew blow bawl bell bill baal bail bale bile buhl bull ball blue
boyla hyla chola tola doula olla moolah mola bola bylaw folia phyla phylae viola voila holla hoyle coala cola coyly koala kola moola olea sola doyly waylay cholla