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.
clot cloot clout clotty cult clod colt calotte culotte glout culti culet cleat cloud gloat cullet galiot collet cloddy cloudy callet galoot collate colloid galliot galloot clad kilt glut cold kelt cauld clade clued coled could gault gleet glute guilt kilty quilt yclad
lot allot ballot blot hallot helot clot maillot pilot plot reallot slot zealot challot chalot shallot