When comparing Puppy Linux vs Ubuntu Budgie, the Slant community recommends Puppy Linux for most people. In the question“What are the best Linux distributions for laptops?” Puppy Linux is ranked 31st while Ubuntu Budgie is ranked 39th. 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
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Pros
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.
Pro User-friendly interface
Good interface on Budgie and a great approach on Ubuntu.
Pro Nightshift
Ubuntu Mate doesn’t have this and it’s really easy on the eyes when working at night.
Pro Minimal installation gives a new look and feel to what a reliable Os should be
LibreOffice may be exploited and used to attack you but a minimal installation keeps the stalkers at bay.
Pro Improved Wifi stability with update
Improved wifi stability with 5.15 update.
Pro Additional themes
No need for external theme sources that may affect how you use your OS. All your favorite distributions can be mimicked.
Pro Safe updates
Updates are stable so far.
Cons
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.
Con Can be slow and bloated
May be preferable for new users, but for those who want a minimal system it can be rather slow and comes with many preinstalled applications.
Con Has Wi-Fi issues
Asks for Wi-Fi password continuously.
Con Bad Experience after an update
Had a bad experience after an update and then I gave up.
Con Cannot customize the panel but then you get a more reliable system
A lot of us like to have a power button , restart button and other frequently used apps in our top panel but with Budgie you can’t really customize this but in return you get a great system.
Con It is only completely good if you install it separately rather than on another OS
