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.
corelate correlate corollate creeled cruelty grueled grillade gruelled coralloid corralled quarreled quarrelled curled
relate corelate correlate prelate areolate arillate variolate corollate prolate serrulate
coral corolla creel creole cruel cruelly