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.
flits flites felts flats foliates filiates flouts fluyts flytes flutes floats flatus fluids faults flotas felids filets fleets flautas fillets velites folates fellates fealties fallouts fluidise volts folds phyllites valets voltes faulds fields floods vaults velleities valutas violets volutes fluidize valuates veloutes violates phylloids
lits slits tallits flits vaults billets cullets ballets fillets blets halids gallets cultus hilts gullets bullets kilts blots pelts ballots halts toilets deltas flites gluts silts phyllites sluts volts violets blats gaults blites colts sialids shallots welts tillites plats piolets dolts belts quilts salts celts pelites rialtos reallots oolites poults illites jilts zealots malts flats howlets maillots palets colitis mullets callets millets molts wilts faults moults halites lats helots voltes alts cults gilts bolts quillets altos elites felids tilts iolites melts jolts rillets galiots gelts culets blitz allots ileitis filets halitus valets felts galliots glitz collets velites sheltas delts pullets willets owlets lilts guilts holts mallets kelts pilots lets plots milts lots litas pallets chalets sallets pellets saults slats plaits slots mullites solids zeolites relets clots lids wallets hyalites
flite flit felid felt filiate flat flied flota fluid flute flutey fluty flyte foliate folioed