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.
double doable doubly dobla dabble dibble diobol tubule tabouleh table tubal tabbouleh diabolo tableau tabouli tabooley
bauble double ruble rouble nubble table bale gabble rubel nobble nebulae bile bubble blue bole blew quibble mobile bubal wabble tubal gobble cobble jubile obole habile rabble feeble boule boulle ciboule seeable dabble doable liable doubly nebule abele tabouleh bobble blae coble foible nibble fibulae bubale babble able bible kibble lobule sable tabbouleh tubule cable roble dibble noble hobble nubile viable pebble fable rubble labile gable suable wobble
dub daub daube dauby dobby dobie doby doobie doughboy adobe adobo outbuy outby