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.
facts fagots facades faggots fugatos vacates vacuities fucoids
acts pacts reacts tacts facts coacts legates gates cates negates loquats locates coats liquates fugatos legatos cots ligates gaits goats recoats rectus rictus scatts scuts skates squats diquats ducts picots equates coequates katas ictus nougats wyliecoats cuts loggats peacoats ikats qats kats cats vacates agates coatis gats rectos recuts scats scots sects skats dicots ducats cactus