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.
doubly double dobla diobol doable tubal dabble dibble tubule diabolo tabouli tabooley tabouleh
doubly hubbly chubbily wabbly knobbly suably rubel bauble bubal bubbly feebly viably ably nebuly bully nobbily nobly nubbly pebbly rouble rubbly ruble double tubal wobbly shabbily
dub daub daube dauby dobby dobie doby doobie doughboy adobe adobo outbuy outby