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.
farside foreside fireside farced frized varsity frizzed fairest viricide frizette virusoid frisette virucide foresaid frost first forced forest freest frosty frowst versed verset verste frowsty phrased
nearside farside resid reside residue fireside foreside preside cirsoid torsade ursid shoreside
faeries fairies fairs farci farcie fares faros fears fiars afars