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.
rattans ratans reattains rattens rattons ratanies ratteens rattoons ratoons retains ratines radians ruttiness redans radons rutins rottenness retines rhytons retunes retenes radiance radiancy retinues routines readiness rootiness redons reddens redness retinas
rattans tans phytanes jettons cotans cottons kittens lattens lattins gitanos rattons retains seitans stains detains titans shaitans tains mittens fattens buttons battens attains tansy mattins muttons ratans butanes pattens rattens reattains cetanes soutanes stanes tetanus witans sheitans
rattan ratan ratany ratteen ratten ratton rattoon reattain