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.
tattoo datto tatty tat tattie tatouay teat toot taut tate dato tutti ditto tutty titty tittie tad tet tit tod tot tut
tattoo too ghetto lotto motto otto petto potto putto datto ditto toot
tattie tatty tattoo tat att batteau patty datto matte batty tate teat battu titty battue tutty pattie latte ratty pattee tatouay cattie batt fatty taut matt tittie catty tutti natty watt