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.
cult culti culet cullet clot colt culotte clout cauld cloot gault quilt could guilt cleat gullet callet clotty guilty culled collet collate quality quillet calotte cullied kelt clod clad glut cold kilt kilty clued guild glout coled cloud glute clade gleet gloat yclad
fault vault cult gault moult poult sault