When comparing OS X Mavericks vs PureOS, the Slant community recommends PureOS for most people. In the question“What is the best laptop OS?” PureOS is ranked 28th while OS X Mavericks is ranked 59th. 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
Ranked in these QuestionsQuestion Ranking
Pros
Pro Battery optimization
There are many features that improve battery life, such as App Nap.
Pro Great if you don't like El Capitan and up.
Relatively fast and retains many design decisions of the OS X of old.
Pro Memory compression features
You can have a lot of things running yet have plenty of memory left.
Pro Free if you have Snow leopard or Lion
Pro Very tweakable
There are many things you can still change through the terminal.
Pro Still supported so far
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Con Outdated OS version
No longer supported by Apple (neither bugfixes or security fixes). The last release was in 2014.
Con Slower compared to previous versions
Con Very hard to find
Apple is very keen to only show the latest version.
Con Can't delete base applications
Con Looks nasty, and slow
Con No mobile installation
You cant install pure os on a android phone.
Con Slower updates
Updates are slower than an unmodified Debian.