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.
pitta pita pieta pit putt pity petto putti potto piety putty petti patty podia potty putto petty pattie puttee pattee puttie put pat pot pad pet padi paid pate paty peat pied poet pout ptui
vitta pitta shittah witty ditty dita riata betta lytta litai kitty guttae gutta cottae iota cotta mitt vittae vita bitty bitt biota lyttae nitty pita vitae pieta raita sutta ditto titty chitty shitty