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.
clipped clapped clopped cleped ycleped glopped clupeid clipt clupeoid gulped kelped galoped clypeate galloped clapt clept yclept coalpit galipot
lipped slipped blipped flipped clipped aliped cheliped flapped dewlapped milliped filliped sliped clopped lopped glopped plopped lapped slapped flopped slopped clapped taliped millipede shlepped