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.
fouls fools foals fowls fuels foils fulls folles ghouls folios foleys follis foliose follows follies flus fils folious ghoulies false falls fleys flues flays fails flies flaws files floes fleas filos flews feels fills voles flees flows viols fells floss filose violas flossy voiles falsie fillos floosy filles fellas failles volleys floosie felloes flossie fellahs fallows fillies villous fellies fellows feeless vowless
fouls ghouls souls noels bulls goals coles haoles bolus kolas tools fuels quolls cauls mauls bolls pules cowls fulls fowls shools chylous tolas dolls jealousy duels sols foils jowls bowls zealous howls jouals holes boules koels fools villous wholes yowls sheols tolls dulse doulas diols mools bolas sauls ulus polis rolls roils owls pulse cholas oils pulls buhls moils gulls polos pilous lulls moles viols gallous hulls nolos cools mulls caules bolos polys mols soles blouse foals poles guls kolos miauls aiolis bullous voles callous pools pileous kohls hauls louse boles gules hulas colas oles coils coulis jealous lolls louis folious violas roles joles gaols boils caulis mules coals hols molls joules lousy blousy moolas soils bilious puls dulls polls cols pulis solos culls pols noils sulus molas doles lulus solus knolls rules tules nulls tolus toils delouse cholos wools toles duals dols reoils shauls shoals shuls wauls yules
foul foully foal foil foley folia folio follow folly fool fowl fuel full fully afoul ovule