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.
lessens lessons loosens lysins leucins license laciness laziness liaisons licensee looseness lousiness licence lucence lucency lysines
lessens sensa sense hausens caissons caseins cassenas cassenes gossans quassins lessons loosens messans missense osseins