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.
vacates vacuities facades facts fagots faggots fugatos
vacates cates locates cats legates decades cades scutes coatees scats coats peacoats goatees wyliecoats agates cotes liquates cutes acutes gates ligates negates equates recoats facades scatts coequates skates legatees ducats