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.
salts saults sallets salties salutes silts sluts slats slots slits sleets salads slates solates solutes zealots sellouts celts silds sleds slides sloids sloyds solids solidus
alts malts halts salts fellates helots gelatos billets moults lilts kelts melts valets collates flits volts colts ciliates filiates pellets toilets slots rillets valuates dilates felts cleats ballots cullets blats relets flats pleats palates balatas gallets wealds gelates shallots willets mallets wallets tallits deltas solates slats guilts chelates plats pilots pallets oleates milts faults bolts poults gloats dealates woalds reallots plaits bleats folates bloats ballets malates holts cultus gilts violets jolts vaults silts quillets culets gaults callets maleates delts cults alates violates eluates plates collets gluts floats lots bullets fillets slits gallates tilts filets lits zealots allots lats howlets saults gelts foliates voltes jilts blots altos maillots elates waltz cholates quilts platys wilts belts balds gullets palliates clots owlets kilts hilts gelatis mullets lets millets flatus piolets molts welts pullets plots toluates dolts delates sluts slates chalets blets sallets celts pelts rialtos relates palets sheltas
salt salty saltie slat slut silty slitty silt slaty slatey slate sault sealed salute sallied sallet salad sailed slit slot slutty