Puppy Linux – Extraordinarily small, lighting fast yet quite full-featured Linux distro

Puppy Linux is one of the earliest lightweight Linux distributions, originally developed by Barry Kauler from Australia in 2003 (which is still active today). It is a very reliable operating system for both old computers and new Linux users! It is small in size, simple in structure, fast in speed, and comes with a wealth of drivers and applications. Even better, it can be installed and run directly on storage devices like external hard disks and USB flash drives (that is, it can be booted from any computer that supports BIOS and UEFI).