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.
tufts tuffets tofts taffetas tofuttis defats duvets tights defeats
tufts haffets fets tofts softs soffits rifts muftis lifts refits lefts qiviuts gifts hefts hafts shafts wefts haffits efts refutes whiffets wafts tuffets defats softas sifts rafts fats lofts fits ghauts phuts befits buffets shifts
tuft tufty toft tuffet stuffed