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.
recoil recoal recall rocaille regal regale reglow reglue reguli rugola regalia regally wriggly
coil recoil col coal cola cole coly cool cowl guaiacol nicol recoal scowl
rec reck wreck arco areca dreck drecky