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.
glout glut glute clout gloat glutei galoot galiot galloot galliot clot cloud gleet guilt cloot glued gault clotty cloudy guilty gallet gleety gullet galette gallate galleta galeate galatea calotte culotte clod colt cult glad gled gold kelt kilt
lout rollout flout pullout glout bailout sellout clout fallout lot lute loti reallot galiot pollute flota salute maillot helot zealot slut galoot pilot moult elute fluty glut plot slot solute zlote dilute valuta chalot allot zloty bluet glute galliot clot fluyt maloti galloot ballot pelota cloud loud gloat volute ballute poult hallot loot veloute flute aloud lota bloat float cloot challot blot shallot
glow glue gluey aglow igloo iglu locule loculi