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.
bell belly belle bel bellow bill bull ball boll bally bulla belay below bully belie billy billow bullae billie boulle bal billowy bowl bola bale buhl bile baal blue blaw bawl blew blow blah bail bole boil bolo blae biali bialy blowy bluey boule boyla bylaw
bell ell fell hell jell quell mell knell cell sell dell tell well shell yell el