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.
abler
babbler dabbler nobbler hobbler cobbler fabler nobler gobbler nibbler cabler doubler wobbler rabbler gabbler dibbler quibbler wabbler bubbler feebler abler bubblier baler biller blear labeler blur bawler belier libeler nubblier bolero bowler boiler bluer diablery knobblier wabblier labeller pebblier caballero rubblier bullier baller libeller bailer wobblier
able abele abelia ably abolla abollae abulia