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.
desalt desolate dieseled tesselate tessellate docility
basalt salt desalt gaslit casualty islet haslet assault slut mislit slot slit slat silt sault salty result zealot
deasil diesel disallow detassel