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.
salpid sliped sloped slapped slipped slopped slept slipt slipout
salpid coalpit shilpit lipide lipoid elapid helped clupeid lipid kelped gulped palped polypide polypoid pulped pulpit whelped yelped
salp salpa salpae salep saloop slap slip slipe slippy slop slope sloppy slype