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.
towsacks tsks tussocks tussucks tasks tusks desks discs disks dusks discus
sacks towsacks cossacks sacs cassocks tussucks kneesocks sucks haceks moussakas mousakas mosaics sakis socks sicks sakes musicks resoaks soaks hassocks tussocks fossicks waesucks