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.
riata reata raita rat rite rate writ rota rato riot ratty write redia rhyta rediae ret rid rot rad rut read rete road root rote roti roto rout raid ride
riata kata dita fiat vita vitae vitta iota biota pieta litai pita pitta raita reata satay data chaeta