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