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.
speeled speiled spelled spieled spiled spoiled suppled spilled spalled spooled sepaled sepalled spelt supplied sepaloid spilt splat split spoilt
speeled peeled spieled spelled speiled repled repelled repealed rappeled rappelled lapelled lapeled cupelled cupeled appealed pealed wheepled