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.
gold gaoled goaled glad gled cold glede guild gleed glade glide could coled glued glady coiled cowled galled coaled colead gulled cooled guiled collude collide gullied gallied colloid collied glut clad colt clod cloud clued gleet gloat glout glute cauld guilt clade gault yclad
bold fold hold cold gold mold old sold told wold