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.
coulisses cullises colessees culices classes coleuses colossus callouses closes galliasses clauses glosses calices glasses calloses glassies calluses glossies coalesces calces clozes colzas galleasses calesas calyces classis glossas galluses gallowses glasshouse
coulisses plisses pelisses blisses galliasses tallises classes plusses molasses malaises glosses glasses losses flosses aliases lasses palliasses cullises paillasses blesses realises valises challises
coulis coulisse caulis colies cullis cols