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.
valises valses falsies fallacies phalluses falces flosses floosies floozies flossies phyleses fallacious fleeces
valises cullises challises realises tallises chalices leses lases galluses loses lyses pollices pluses pelisses malices dulses coulisses realizes calloses helices calluses cilices slices dialyses taluses culices aliases malaises plisses bolases balases liaises blisses pulses polices palsies teleses biolyses cylices dualizes valses phyleses phalluses falsies boluses xyloses calices closes
valise vails vales valse veals vials ovals