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.
eclair
eclair glair glare glary gular aglare facular hacklier glairy jigglier jugular knucklier locular nuclear peculiar regular scalar scalier sicklier declare uglier weaklier ligular glaire couloir macular collar coalier clear clary claro vacuolar collier gigglier jocular likelier gogglier nigglier ocular piacular wrigglier scalare secular squallier tegular wagglier wigglier