FatDog64 Alternatives

Simple operating system based on Linux that uses "modules", and loads everything into RAM. Can be persistent too.

Dietpi is a debian based operative system made to install new apps easyer.

Open Source

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Learn how to install Porteus, about Porteus modules and getting porteus to work with wifi internet.

Plop Linux is a small distribution built from scratch that can boot from CD, DVD, USB flash drive...

CRUX is a lightweight Linux distribution for the x86-64 architecture targeted at experienced Linux...

DebianDog is very small Debian Live CD shaped to look and act like Puppy Linux.

runs all your existing IBM OS/2 programs on today's hardware

9 hours ago - It does include a proprietary software set optimized for business users, students, researchers and developers." A list of features and further details can be found in the company's release announcement.

Mezzano is another operating system that is written in a common lisp.

Lubuntu is a fast and lightweight operating system with a clean and easy-to-use user interface. The core of the system is based on Linux and Ubuntu. Lubuntu uses the minimal desktop LXDE, and a selection of light applications.

ToaruOS is the complete operating system for the desktop operating system of ARMv8.

IBM OS/2 is a series of computer operating systems that is created by Microsoft and IBM under the leadership of software designer Ed Iacobucci.

Ubuntu is a Debian Linux-based open source operating system for desktop computers.

Open Source