Online MD5 Cracking Service
toast writes "Did you forget your password but have your /etc/shadow? If so, this site is for you. Submit a MD5 hash and within a few days you'll have an answer. Of course, once Slashdot has its way, you'll have to wait a few years for an answer.. At least now I'll always know what f3789b3c1be47758203f9e8a4d8c6a2a means.."
FreeBSD/DragonFly and OpenBSD can use blowfish to encrypt passwords, and it's what I personally use whenever I use any of them.
MD5's security has been in question for some time, so quite a while ago I decided that it was a good time to move on to someting new and improved.
Perhaps it's time that Linux allowed you to do the same, or failing that, perhaps it's time that you yourselves moved on to something "new and improved" and make the switch to one of the more security focused operating systems that I've listed above.
There's this thing. It's called google. You type something into it, and it searches the web for that something. You should try it sometime.
Considering on a search for "/etc/shadow" the first result is a page explaining what it is, why in the heck did you even comment asking a question like this? You deserve to not have your question answered. Google first, don't expect other people to fulfill your laziness.