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.
solely slily slowly sillily sallowly salal salol slyly
vilely solely palely hallel woollily sillily diallel lily leal lolly allele allyl bluely jollily holily lowlily oilily paleal filially slily ileal leally daylily wilily chillily
solei sole sol sale slew sloe slue soil sola soli solo soul isle