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.
diecious dioecious dioecies diesis diseuse disseise dices disseisee daises deuces douses dieses deices disuse disses dizzies daisies dassies disease decease doozies diocese disseize disseizee dosshouse daces dazes doses dozes duces dosses dowses touses
vicious luscious diecious dioecious piceous poaceous cis