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.
street strette stretta stretto stretti sturt start strut stereoed strati strata strode stored strait stared stride stirred storied starred striata striate steered sutured saturate seatrout stearate stroud sturdy citrate satyrid steroid siderite
street dreed terete terret treat treed tret turret retreat whittret
strew star ester asteria sutra strow stare starry steer stere stereo stir store storey story straw strawy stray stria striae stroy aster astray estray