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.
buhl bull bully bulla boule boulle bullae bel bal blew blah bile boll bell ball bola bale blae blow bowl blaw bail blue bill bole boil bolo bawl baal bluey belie blowy bally billy boyla belay bialy below belle biali belly bylaw