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.
fields felids velds felts folds filets flites floods fluids faulds fillets fellates foliates fealties filiates flits flats flotas flatus faults fleets fluyts floats flouts flutes flytes flautas folates velites violets fallouts fluidise fluidize veloutes violates
elds melds welds fields chields yields bields velds gelds wields shields leuds celts wolds gleeds leads gelts lads caulds olds balds milds welts gilds sialids gleds childes kelts lids solids holds clods folds ballads allods halids wilds felts gledes glads wealds pelts dildos deleads melts golds moulds felids silds pleads clads builds tildes coleads faulds guilds bleeds naleds molds plods salads sleds daledhs delts teledus toledos bolds colds belts woalds
field filiate fuelled fueled foiled flied fillet filled filet failed filed felt felled fellate felid fealty afield