Symphony OS is described as 'Live CD Linux-based operating system, developed by Ryan Quinn, Jason Spisak, and Alexander Drummond. The distribution was dormant until 29 June 2011, when a new build was released (Developer Build 2011.7511)' and is an app in the OS & Utilities category. There are more than 25 alternatives to Symphony OS for a variety of platforms, including Linux, BSD, Self-Hosted solutions, Windows S and Windows. The best alternative is Ubuntu, which is both free and Open Source. Other great apps like Symphony OS are Debian (Free, Open Source), Linux Mint (Free, Open Source), Arch Linux (Free, Open Source) and Fedora (Free, Open Source).
Ubuntu is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a web browser, presentation, document and spreadsheet software, instant messaging and much more.
Linux Mint is one of the most popular desktop Linux distributions and used by millions of people. The purpose of Linux Mint is to produce a modern, elegant and comfortable operating system which is both powerful and easy to use. Latest: Ulyssa (20.1).
Arch Linux is an independently developed, i686- and x86_64-optimised GNU/Linux distribution targeted at competent Linux users. It uses pacman, its home-grown package manager, to provide updates to the latest software applications with full dependency tracking.
FreeBSD is an advanced operating system for x86 compatible (including Pentium® and Athlon™), amd64 compatible (including Opteron™, Athlon™64, and EM64T), ARM, IA-64, PowerPC, PC-98 and UltraSPARC® architectures.