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.
defiance deviance defence defines deviancy defense deafness diaphones daffiness divans diaphonies deafens deveins tiffanies diaphanous davens devons dovens
fiance affiance defiance deviance faience fiancee evince deviancy