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.
tutti tutty tut tittie tattie tutu taut tout titty tatty tutee tattoo dautie tet tat tot tit tide tote tidy tied toot daut duty tate titi toit teat
putti tutti cutty putty puttie butte butty hottie jutty cattie cutie butt sutta gutta mutt nutty pattie petti putt putto rutty dautie tittie gutty tattie tutty
tutti tutty tut putt butt tutee tout tittie tatty tattie sutta putty putto puttie putti puttee gutty titty guttae gutta cutty jutty butty rutty suttee tattoo taut mutt butte nutty tutu