1- TrixBox 2.8.04
Trixbox CE is an easy to install, VOIP phone system based on the Asterisk PBX.
Trixbox is designed for home or office use. Trixbox CE includes CentOS linux,
mysql, and all the tools needed to run a business quality phone system.
Web Link:
ftp://ftp.uk.freesbie.org/sites/downloads.sourceforge.net/a/as/asteriskathome/
trixbox%20CE/trixbox%202.8/
2- Virtual box
VirtualBox is powerful Cross-platform Virtualization Software for x86-based
systems. “Cross-platform” means that it installs on Windows, Linux, Mac OS X
and Solaris x86 computers. And “Virtualization Software” means that you can
create and run multiple Virtual Machines, running different operating systems, on
the same computer at the same time. For example, you can run Windows and
Linux on your Mac, run Linux and Solaris on your Windows PC, or run Windows
on you Linux systems.
Web Link:
https://www.virtualbox.org/wiki/Downloads