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.
cleped ycleped clipped clopped clupeid clapped clept clupeoid yclept gulped kelped glopped galoped clypeate galloped clapt clipt klepto coalpit gluepot
bleeped milleped ycleped cleped whelped kelped dewlapped galoped sliped lolloped beleaped plopped millipede millepede pulped shlepped sloped lapped blooped filliped glopped galloped clopped louped flapped taliped dolloped blipped aliped walloped polyped slopped lipped slapped clipped leaped palped milliped slipped eloped cheliped clapped helped lopped flopped looped loped gulped flipped clupeid yelped
clepe clap clip clop clypei culpa culpae