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.
otitis oddities ootids outeats outadds outdoes
titis otitis dits dauties dites ditas diets deities titties dawties tutties lyddites biotites fatuities idiots coedits ditties petites ratites satieties cheddites adits tuttis quiddities ditsy oddities nudities ootids doits duits duties jadeites teiids tits tatties toits audits edits viduities patooties podites reedits hydatids chedites