When comparing Zorin OS vs Puppy Linux, the Slant community recommends Puppy Linux for most people. In the question“What are the best Linux distributions for desktops?” Puppy Linux is ranked 10th while Zorin OS is ranked 34th. The most important reason people chose Puppy Linux is:
Puppy Linux requires 128MB of RAM and 333Mhz of CPU, although 256MB of RAM is recommended.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Stable
Pro Good Selection of pre-installed software
New users may be unaware of what software is available for Linux, but Zorin includes a good selection for everyday tasks out of the box.
Pro Windows desktop style
The desktop UI was made to resemble Windows 7, but alternative settings are available.
Pro Ubuntu-based
Zorin is compatible with Ubuntu's sizable repositories of Free Software.
Pro Bundles tools for changing the look and feel of the distribution
Zorin includes look changer and theme changer.
Pro Partial Windows compatibility
Zorin includes WINE and PlayOnLinux to run many Windows applications and games.
Pro Installer can set up dual boot
Pro Ubuntu got too big
Ubuntu uses too much resources, Zorin uses less.
Pro Accessibility features
Pro Zorin Connect
Allows syncing notifications with your phone.
Pro Low resources consumption
Pro Extremely low minimum system requirements
Puppy Linux requires 128MB of RAM and 333Mhz of CPU, although 256MB of RAM is recommended.
Pro The whole OS runs off of RAM
Since Puppy Linux is completely loaded and run off of RAM instead of HDD, it's read/write speed is not a factor.
Pro Designed to run as a live USB/CD
A portable version, that can be carried on a thumb drive without requiring installation, weighs less than 100MB; a Live CD - less than 150MB. You can even save your settings and files for Puppy on the external device/media.
Running off a live CD also has security benefits, as your system will reset to the known config after each boot.
Pro Different distro based versions available
Puppy Linux offers a few different releases.
The first is an Ubuntu based release called Tahrpup, by using this version the user is able to take advantage of all software and support from Ubuntu.
The second version is called Slacko, which is built upon the Slackware binaries.
The third is called Wary and it is built to support older hardware than the rest.
And the fourth is called Quirky, which is used as a base to explore new ideas.
Pro Linux distro designed for this exact purpose
Pro Offers a long term support release
Puppy Linux offers an LTS release called Precise.
Pro It can be the only distro that works
Sometimes, Puppy Linux is the only distro that works on an old machine: all other distros are more demanding.
Pro JWM used as window manager
JWM is a low resource window manager that is used in most Puppy Linux installs.
Cons
Con Limited desktop styles in Free Version
All free editions only offer Windows XP, 2000, and 7 and Gnome 2. You have to pay $9-10 in order to get Unity (Ubuntu) and Mac OS X themes.
Con Even with v16 Pro, zero tech support replies
Do not pay for Pro. You’re supposed to get tech support with your $39 purchase. After contacting them a few months ago about the inability to install build tools due to their wonky custom versions, to date there has been no answer. You could find a friend and get them to send you the theme and look packages. The rest is all available easily in the Ubuntu catalog.
Con A bit ugly
Using puppy makes you feel like you just jumped 20 years into the past. Being that the purpose of Puppy Linux is to run or really low resource machines the software used is often on the older side, which is precisely why it has a 20 year old look.

Con Not as light as it used to be
It's light, but not as light as it was 1-2 years ago.
Con Smallest software library ever
You can barely find any precompiled packages for Puppy.
Con No built in compositing
Being a low resource distro there is zero built in compositing for the JWM window manager. Though one can be added through a bit of work.
