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.
repelled repealed repolled repled rappelled replead replied rappeled reapplied replete rippled replot replate ripplet
lapelled repelled cupelled spelled rappelled polled spilled peeled rappeled speeled pellet sepalled pilled repled palled appealed lapeled pealed repolled pulled spalled cupeled speiled repealed spieled appalled wheepled
repel repeal replay replow reply repoll ripely