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.
calm calami clam culm claim climb qualm clime kalam clomb kalium cleome qualmy clammy kalmia coelom gallium coulomb kalimba coelome glam glim glum glom gleam glime gloam gloom glume golem kelim kilim
balm halm calm qualm malm palm realm