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.
boule boulle bole bullae bolo bowl blue boil blew blae bale buhl bull bola boll bile belle belie boyla bulla bully bluey billie blooie bailie blooey bailee bailey bal bel ball bell baal blaw blah bill bawl blow bail
joule boule ole holey coulee muley role pole olea mole haole hoyle cole mooley hoolie quale sole soul doolee doula tole tulle woolie jole hole voile guile doolie toile solei dole vole louie rule pule mule whole tule oleo ghoulie joual coolie bole boulle foley foul ghoul yule