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.
putt putti putty putto put puttee puttie pout pitta pouty petto petty potto patty potty petti pattee pattie pit pat pet pud pot poet pate peat pita pity paty ptui peaty pieta piety