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.
glut glute glout glutei guilt gloat gleet clout gault glued gleety gallet gullet galoot guilty galiot galatea galloot galeate gallate galette galleta galliot kilt gled clot glad gold colt cult kelt cleat kilty glede glady glade culti culet guild gleed cloud glide cloot clued quilt