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.
routine rutin ratine retine retinue retinae retina rotten retene retain retune redone reattain radon ratan redon ratton ratany ratoon rattan rhyton ridden radian ratten ratteen rattoon written
mutine poutine routine tine chutnee soutane matinee retinue retinae ratine patine patinae lutein mutiny butane betaine tinea retine rutin cutin detinue butene chutney tin
roti rout route croute grout grouty trout trouty rot rut