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.
flautas flats flouts faults fluyts floats flatus flutes flotas folates valutas felts flits fellates filiates foliates fallouts flites flytes vaults fluids filets faulds fleets volutes fillets veloutes violates valuates fluidise fealties volts folds felids fields floods valets voltes velites violets
flautas balatas faults valutas vaults galateas gaults saults
flauta flat fault faulty float floaty flout flute flutey fluty fluyt folate