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.
cloud cloudy clod could clued clout cloddy clad colloid clot collude cold glout cloot yclad clade coled glued cauld clotty cooled culled cowled colead keloid coaled called coiled collied collide cullied culotte calotte quaalude claddagh colt cult glad gled glut gold
aloud cloud loud xyloid toluid sloid slued reload sellout nielloed plod quaalude meloid could glued clout colloid blued sialoid elude allod haloed valued phyllode flued flood blood helloed belaud bailout allude lude illude cheloid lode lout haloid clod hulloed hilloed phylloid load loid halloed leud laud fallout flout fluid clued collude holloed cloudy glout keloid melody mould payload pullout rollout siloed sloyd soloed delude would should hyaloid
calo cloy clue coulee coquille locule loculi