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.
doubler doublure dabbler dibbler diablery diablerie tubular tubulure tabular
doubler hobbler wobbler wabbler dibbler dabbler rabbler nubblier nobbler knobblier labeler quibbler gobbler gabbler cobbler cabler baler blear fabler bubblier bubbler babbler abler bluer libeler nibbler nobler pebblier rubblier diablery feebler wabblier wobblier