SUSE Studio is a free online Linux image creation service sponsored by Novell Inc. The company behind SUSE Enterprise Linux and Open SUSE Linux. With SUSE Studio you can develop your own SUSE based Linux OS, software appliance or virtual appliance, choosing which applications and packages they want on their "custom" Linux and create their own branding for it.

You can also choose between openSUSE, SUSE Linux Enterprise Server and SUSE Linux Enterprise Desktop bases for your custom builds, can choose GNOME, KDE and other desktop environments, The resulting build will be fully functional system with applications like Firefox, LibreOffice, and whatever apps they want.

Bruce Dubbs has announced the release of an updated version of Linux From Scratch (LFS), version 7.1. Linux From Scratch is a book of instructions on how to compile a base Linux system from scratch, either from an existing Linux installation or a Linux live CD. It is intended primarily as an educational exercise for those wishing to get an understanding about how a Linux system works under the hood.

Ever wondered how you can create a backup of your Ubuntu Installation with all the applications you installed which you 've collected after reading articles like this on Internet along with your home folder with all your documents and user settings such as custom icons, themes, plymouth boot splash, grub splash screen etc.,? or how you can make a customized version of your Ubuntu installation with the applications you need and clone it to the other machines in your office, without doing all the downloads and add PPA stuff etc on every single machine ?, or redistribute your custom build to your friends who don't have high internet bandwidth to download all the application they need ? Or just flaunt your customized Linux Distro (with your name and customized branding) within your circle and become a cool geek ?

Then Remastersys is the tool you are searching for.