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.
fealties felts fellates felids flytes faults flutes flites velleities folates velites foliates veloutes fallouts filiates valuates flats flits filets fleets faulds fields fluyts floats flatus fluids vaults flouts valets voltes valutas flautas fillets volutes violates phyllites folds velds volts floods flotas
fealties lealties shelties realties salties kilties velites ballutes halides blighties collides folates blites illites lutes baldies plotties gelatis fellates volutes salutes malates relates glutes dualities nullities mullites oldies palates plates chelates pollutes voltes slides solutes zloties delates dilates flutes velleities iolites laities elides bolides realities violates phyllites poultice flites elutes collates flytes colitis halites boletes alates platies elates oolites pelites jollities gallates gelates qualities polities elites glides slates solates zeolites dealates deletes dilutes tillites cholates hyalites