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.
fuels fells fulls flues fouls feels fellas feeless fils fellies fellows fellahs felloes flus fleas fails flays fills foals filos veils falls flies floss flaws flews fowls flows veals floes flees false fleys fools foils files foleys folios filles values flossy folles falsie floosy ghouls follis fillos failles fallows fillies folious follies follows ghoulies viewless
fuels duels els bluesy nulls bels meals lulus veals values hauls bells blueys heels rules hells lues keels gulls miauls buhls seels hulas quells caules louies cauls blues mels knells coulis pulse peels tels yells shiels deils shells shauls souls chelas wheals sels weals ulus pulls tells glues cells taels teels reels dulls mulls dels duals sauls delis gels zeals ghouls pules jouals peles mules fouls sells joules cels teles mewls dulse wells heals tules sheols jells fulls koels else helos pulis clues heils bulls mauls caulis noels veils slues flues eels chiels feels hulls culls mells lulls reals kneels ceils guls seals peals fells ells riels shuls sulus deals gules deles dells puls doulas boules teals telos wauls wheels sheals yules
fuel feal feel fell fella fellah felloe fellow felly feyly flue foul foully full fully