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.
malaises malices molasses malicious
liaises malaises tallises realises pleases pelisses paillasses blisses coulisses clauses classes valses valises fallacies bolases cullises lases aliases leases lazies lasses galleasses glasses balases galliasses molasses palliasses plaices plisses releases challises