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.
remails ramilies ramillies ramblas ramulous rhymeless rambles rimless rumbles
mails camails emails remails mils timbals tamales smalls hamals similes hammals sambals males maills kamalas moils malls jumbals sawmills smiles miles mills tamals bummalos mailes samiels females cymbals gimmals hamauls gimbals meals milos mammals mauls tymbals