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.
cachous caches coaches gauchos catches cashoos gashouse cautious cashes couches cutches cooches cashews cashaws quaichs gouaches quaiches coshes gashes kashas cuishes cushaws gotchas ketches quashes quiches
cachous fashious washhouse chose chouse chows echoes echos chaos gashouse fichus gauchos machos nachos rechose reechoes schuss chowchows
cachou cache cashoo catch catchy coach