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.
rugal regal regale rugola regalia regally rackle raggle recall recoal reglow reguli ruckle wriggle wriggly rocaille
jugal fugal rugal gal faucal ducal bugle squall goal equal regale legal quale vagal fugle egal gall gale gala coequal quail begall regal squeal gaol ugly
ruga rugae rug raga erugo frug drug druggie druggy trug