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.
mullets millets mallets muletas mullites moults maillots malts mulattos milts maleates molts melts mulattoes moulds malates mildews miladies maladies melodies multiuse melds milds molds maltase maltose meloids miladis
ballets willets gullets mullets billets quillets fillets gallets pallets mallets pellets sallets rillets pullets millets collets wallets cullets bullets callets lets maillots galletas boletes piolets relets allots bluets violets culets filets fleets blets chalets reallots valets cleats boletus sleets howlets tallits owlets pleats ballots lilts leets deletes bleats palets muletas toilets gleets shallots
mulled mullet malled mallet mauled melled milled millet muled muleta mullite amulet