When comparing PCLinuxOS vs PureOS, the Slant community recommends PureOS for most people. In the question“What are the best Linux distributions for desktops?” PureOS is ranked 18th while PCLinuxOS is ranked 38th. The most important reason people chose PureOS is:
PureBrowser is a modified version of Firefox that comes with security focused plugins. There is also a copy of TOR installed in the OS by default.
Specs
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Pros
Pro Rolling release
The distribution is continually updated, so there's no need to install OS upgrades by hand.
Pro Stable
PCLinuxOS is designed around stability.
Pro Multiple desktops available
Mate, LXDE, and KDE desktops are available.
Pro Can remaster the boot DVD
PCLinuxOS has built in tools for remastering bootable DVD into a copy of current install.
Pro Excellent hardware compatibility
Comes with nVidia drivers out of the box. Important if the PC has an nVidia chipset. Most Debian based distros don't have nVidia drivers available at install time.
LXDE version works well with older hardware.
Pro PureBrowser and TOR
PureBrowser is a modified version of Firefox that comes with security focused plugins. There is also a copy of TOR installed in the OS by default.
Pro You can download and install it, without the need to purchase their laptop
PureOS is available from their site for free for anyone to use, no need to purchase any of their laptops in order to check out the OS which is a tweaked build of the Trisquel distro.
Pro Default install on a free, open source laptop
PureOS is the default OS installed on the Purism Librem laptops.
Cons
Con Installation fails most of the time, error messages, and hard to go to full screen in virtual box
Con Uses RPM packaging system
Uses the RPM packaging system with APT, rather than the more popular DEB packages.
Con No mobile installation
You cant install pure os on a android phone.
Con Slower updates
Updates are slower than an unmodified Debian.