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.
barca baric bark barrack brick brock boric barky bricky barque baroque berg berk birk bork brag brig burg
barca arc taroc circa orca narco arak arco areca baric erica verruca curacao curacoa lorica maraca marc marka myrica narc naric parka daric charka
bar bare barre barrio barrow bear boar kbar