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.
espied
spied passepied espied despite rasped gossiped spite misshaped gossipped gasped cusped hasped fissiped zapped spaed zipped supped spued speed cuspid sopped respite sped hispid vespid souped siped seeped soaped sapid sopite sapped lisped sipped wisped