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.
roadeo rodeo roadie rode road radio rad rod rood roto raid rota rude read ride rote rate root rede rooty rowdy rotte ready radii route readd wrote rediae rat red ret rid rot
roadeo ado shade dado rodeo roadie radio meadow made lade jade cade hade video fado fade bade aide sade wade shadow