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.
floods folds felids fluids flouts floats flotas fields faulds fallouts fluidise felts velds flats flits phyllodes phylloids flytes fluyts fleets flutes flites flatus faults filets flautas folates fillets fealties fellates filiates fluidize foliates veloutes
floods bloods yellowwoods loots phylloids hyaloids wolds sloids plods olds meloids golds galloots colds cloots clods holds haloids phyllodes loids bolds lotos allods cheloids sloyds reloads payloads molds keloids colloids galoots clouds loads lodes folds
flood float floaty flota flout fooled afloat loopholed