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.
fossils fossilise fusils fossilize fusillis fusels fuzils vassals vessels foozles visuals
fossils dossils tussles tahsils dossals assoils dossels wrassles resails rassles mussels sills silos soils assails basils resiles vassals fusils vessels hassels hassles missals missels missiles passels reassails sails tassels wassails