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.
faulds faults folds felids fields vaults floods flatus fluids flautas fluidise fallouts fealties flits velds felts flats fluyts valets flouts filets floats flutes flotas flites flytes fleets fillets folates valutas fellates filiates fluidize foliates valuates
faulds moulds caulds wilds wolds toluids welds solids dildos salads silds naleds plods lads alludes velds lauds bolds elds sialids childes ballads eludes fields faults bields clods colds builds glads golds quaaludes milds folds holds cults leuds illudes lids balds colludes vaults ludes fluids felids clads leudes belauds molds gelds halids gilds gaults gleds clouds deludes shields chields woalds wields wealds tildes sleds allods saults poults olds moults melds guilds yields
fauld fault faulty failed fallout fealty flauta foaled fouled fueled fuelled fulled vault vaulty