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.
seeable sable suable sabal suably sawbill sibyl ciboule
seeable able table dabble abele sable babble bauble fable feeble viable gabble habile cable gable labile liable nebule pebble rabble suable doable wabble