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.
boil bole bowl bill bola bile bolo boll bail bialy billy boule boyla biali blooie bailee billie boulle bailie bailey billow bel bal billowy baal bull buhl bawl blah blow bale ball blae blew blue blaw bell blowy bully bulla bluey belie below belly belle belay bally bylaw
boil foil coil moil noil oil reoil roil soil toil