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.
adroit attrit attrite autoroute adored
adroit droit territ tarot hydroid droid diorite bitterroot toroid meteorite laterite nitrite outtrot outwrite patriot redroot seatrout steroid futurity trait torot cutthroat trot trout attrit attrite beetroot feterita trite maturity meteoroid outroot outwrit outwrote puttyroot hysteroid siderite strait