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.
qualm qualmy calm culm kalam calami kalium kalmia coulomb gallium kalimba clam glam glim glom glum
qualm halm salmi palmy malmy alme alum baalim balm balmy alma haulm halma haulmy calm culm kalam qualmy malm palm realm shalom
quale qualia quail quelea quell quill quillai quillaia quoll equal equally quakily squall squally