This is Red Pill, a 3D OpenGL "Matrix" screensaver for Mac OS X. Copyright © 2002-2012 mathew meta@pobox.com.
Looking for a binary download? Check the downloads section.
Red Pill is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA or visit http://www.fsf.org/
For more information about Red Pill and why you can't find it in the Mac App Store, see http://meta.ath0.com/software/redpill/. Please note that Apple's terms and conditions on the App Store prohibit distribution of GPL-licensed software.