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.
suppled supplied spiled spieled spilled spalled sepaled speiled spoiled spelled spooled speeled sepalled spoliate sepaloid sepiolite spelt spilt splat split spoilt
hoppled dappled toppled poppled suppled tippled rippled nippled pled spiled piled applet uppiled lapeled supplied poled puled plied replied coupled rappeled ripplet repled replead reapplied applied peopled plead sepaled cupeled paled wheepled