Quoting rpm5.org:
Traditionally, RPM is a core component of many Linux distributions, including Red Hat Enterprise Linux, Fedora, Novell SUSE Linux Enterprise, openSUSE, CentOS, Mandriva Linux, and many others. But RPM is also used for software packaging on many other Unix operating systems like FreeBSD, Sun OpenSolaris, IBM AIX and Apple Mac OS X through the cross-platform Unix software distribution OpenPKG. Additionally, the RPM archive format is an official part of the Linux Standard Base (LSB).
Quoting netbsd.org:
Table 1. Platforms supported by pkgsrc: 
Platform 	   Date Support Added
NetBSD 	           Aug 1997
Solaris 	   Mar 1999
Linux 	           Jun 1999
Darwin (Mac OS X)  Oct 2001
FreeBSD 	   Nov 2002
OpenBSD 	   Nov 2002
IRIX 	           Dec 2002
BSD/OS 	           Dec 2003
AIX 	           Dec 2003
Interix  	   Mar 2004
DragonFlyBSD 	   Oct 2004
OSF/1 	           Nov 2004
HP-UX 	           Apr 2007
QNX 	           Oct 2007
Haiku 	           Sep 2010
That's with just one minute of researching package systems.

In reply to Re^3: Installers that handle more than just modules and scripts? by JavaFan
in thread Installers that handle more than just modules and scripts? by jhourcle

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.