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.
quilt quillet guilt guilty quailed quality cult quilled kilt culti culet gault kilty guild guiled cullet kiltie gullet culotte quelled quaalude clot colt glut kelt
built guilt quilt toilet silty sault pilot milty lilt guild vault kilty guilty build fault faulty filet vaulty culti hilt gault milt kilt moult gilt poult jilt silt culet tilt cult wilt
quill quillai quillaia guile quail quale qualia quelea quell quoll quickly squill squilla squillae