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.
roti rot riot rote rout rota roto root rooty wrote retie route rotte roadie rod rut ret rat rid rite ride rate rood road raid rode rete writ redo rato rhyta ratty wried reata riata radii radio rodeo rowdy rutty raita write redia