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.
glad glade glady gled gold clad clade glede gleed yclad glued glide gloat guild goaled colead gulled galled guiled gaoled galatea gullied gallied gallate galeate galleta claddagh clod cold glut cauld guilt glute could glout clued cloud cleat gleet coled gault
lad ballad clad glad yclad salad