XScreenSaver
A collection of free screen savers for MacOS X

by Jamie Zawinski
and many others

version 5.22
16-Jul-2013

http://www.jwz.org/xscreensaver/
To Install:

Simply double-click each of the savers you want to install.

To install all of them, drag all of the .saver files to the "Screen Savers" folder in your "Library" folder.  You may need to create the "Screen Savers" folder first.

If you get an error saying it "can't be opened because it is from an unidentified developer", then open Terminal and  type this:

xattr -r -d com.apple.quarantine ~/Library/Screen\ Savers
sudo xattr -r -d com.apple.quarantine /Library/Screen\ Savers

When upgrading:

If you selected "Install for all users" last time, make sure you do that again this time, or you will have both the new and old versions of the screen savers installed.  That can be confusing!

That is, be careful not to end up with copies in "/Library/Screen Savers/"
 as well as in "/Users/YourName/Library/Screen Savers/".

To Uninstall:

Open the "Screen Savers" folder and drag any unwanted savers to Trash.

For More Information:

Please visit the XScreenSaver web site.  The XScreenSaver collection is free software, and all source code is available there.

iPhone and iPad:

XScreenSaver also runs on iOS! It is available in the iTunes App Store, and it's free!