This is RPM, the RPM Package Manager.
The latest releases are always available at:
http://rpm5.org/files/rpm/
Additional RPM documentation (papers, slides, HOWTOs) as well as
mailing lists for users and developers can be found at:
http://rpm5.org/
The RPM Package Manager was originally written in 1997 by:
Erik Troan <ewt@redhat.com>
Marc Ewing <marc@redhat.com>
See the CREDITS file for a list of folks who have helped out
tremendously.
RPM may be distributed under the terms of the LGPL 2.1 license (see the
file COPYING.LIB for details).