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.
studs studios studies studdies studious stouts steads steeds stades status setouts stadias statues statusy situates steadies stats stets stots states stoats stotts sedates satieties
studs bututs statusy status statues ootids quietudes etudes tutus duads tuts tods teds tads duds dudes hydatids
stud studdie studio study situate stade stadia stout sueded astute