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.
clumsy glums culms calms clams glumes climbs claims climes coeloms kaliums calamus cleomes coelomes coulombs galliums glims glams gloms kelims glimes kalams glooms golems glomus gloams gleams kilims qualms gliomas kalmias kalimbas
clumsy flumes solums slimsy plums plumbs oleums kaliums glumes culms illumes heliums haulms volumes vellums foliums flimsy loumas blumes alums alliums lums lumas galliums glums malmsey palliums plumes relumes slums chillums
calm clam clammy climb clime clomb culm glum glume