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.
styli style stelai steelie stoolie stele stool stale steal still stall sotol stela setal stole stull steel stile settle steely stelae stella stilly sedilia sootily
styli tali butyl nautili outlie style