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.
hyphenates phenates phonates phantasy vents feints finites vendace vendees vendues vanities vendeuse
enates penates hyphenates phenates senates nates annates tannates phonates denotes maenades sienites manatees kentes cenotes lenites ruinates mentees gentes sinuates neonates donates rentes yentes