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.
fillet filet filled fleet filed failed violet fulled foiled felled fallout filiate fuelled vialled fellate flat felt flit fled velleity flued fluyt float field valet fault flout flyte flied flota fluty flite flute vialed veiled floaty fouled fealty flutey fueled fooled foaled folate faulty vailed fowled flauta foliate folioed vallate violate phyllite phyllode
billet mullet pallet gullet ballet callet sallet quillet gallet willet cullet bullet wallet collet rillet millet pellet fillet pullet mallet let lulled fleet balled fuelled piolet gelled relet bolled muleta galleta hilled filled milled belled mulled gleet cleat called violet walled knolled leet dialled shilled shallot challot woolled willed celled palet tolled tilled dulled dolled felled boleti owlet ballot malled vialled culet reallot bluet valet galled killed bulled rolled polled culled melled nilled hallot gulled quilled bolete quelled nulled allot gilled billed fulled filet blet bleat rilled lilt jelled sleet delete pulled knelled palled hulled pilled lalled maillot lolled howlet dilled helled duelled tallit toilet welled pleat chalet chilled shelled yelled
fille filly fillo fill fil fell villae file vill fila full felly follow fellah filo fellow felloe fail foil fella folly fallow fully fall villa faille villi