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.
below bellow blow blowy bel billow blew billowy bowl bell blaw bolo belie bylaw belay belle belly blooie blooey bal bail bale baal bile bill buhl blue blah boil bola bole boll ball bawl bull blae
below low flow follow hallow helio hello hollow fellow mallow callow pillowy cello sallowy duello tallowy wallow willowy yellow niello blowy fallow glow billowy billow bellow alow allow helo blow jello mellow pillow plow sallow slow tallow teloi willow shallow yellowy