Based on Fedora, Korara "aims to make Linux easier for new users, while still being useful for experts" with an operating systems that "just works." Several different desktops are available, so users can choose the interface that seems the most comfortable and familiar.
19. Ultimate Edition
This Ubuntu remix aims to provide the "ultimate" computing experience. It offers an intuitive interface for newbies and improves on Ubuntu's software management and wireless capabilities.
This Linux distribution focuses on providing an excellent "out of the box" user experience where everything "just works." At the same time, it attempts to incorporate the latest releases of open source software. And in case you were wondering, the name comes from an Italian dessert.
Trisquel is a Ubuntu-based Linux distribution aimed at home users, small enterprises and schools. The interface resembles the traditional Windows look and feels very similar to XP or Windows 7.
If you just want to give Linux a try without installing anything on your hard drive, Knoppix runs from a Live CD. You can download the code and create your own CD or order a very inexpensive pre-made CD from any one of a variety of vendors.
If you have an older system that doesn't meet the system requirements for Windows 7 or 8, Lubuntu might be a good option for you. It's a lightweight version of Ubuntu that's very fast and energy efficient, and it's a particularly good choice for underpowered Windows XP laptops.
This variation on Lubuntu was specifically designed to help users give new life to older PCs. It has four different desktop paradigms (basically different looks), including one that mimics Windows XP. Users who have grown tired of XP's long boot times will also appreciate the fact that LXLE boots in less than a minute on most systems.
Also based on Lubuntu, Peppermint prides itself on "welcoming new Linux users." It's extremely fast and takes a web-centric approach to computing.
Like Lubuntu, Xubuntu is a lightweight version of Ubuntu. It uses the Xfce interface, which is clean, modern and easy to use. It also runs well on older hardware.
27. Elementary OS
According to Distrowatch, Elementary is among the ten most popular Linux distributions. It's very lightweight and fast, and the interface, while more similar to OS X than Windows XP, is highly intuitive.
28. Joli OS
This cloud computing-focused OS aims to "bring your old computers back to life." You can also install it alongside Windows with the option of selecting an OS on startup. It works with the Jolicloud service that stores your files in the cloud.
Puppy is super small—just 85 MB—so that is usually loads into RAM on most systems and runs incredibly fast, even on older systems that might have been running Windows XP. Despite its small size, it includes a full graphic interface designed for new Linux users.
Because it's fairly lightweight, CrunchBang (sometimes written #!) is a good option for older or underpowered systems that might be running Windows XP. It's based on Debian but uses the OpenBox window manager, which will feel familiar to Windows users.
Simplicity is based on Puppy Linux and offers a slightly different look and feel. It comes in four different flavors: Obsidian and Netbook are lightweight versions suitable for older systems, Media is built for PCs that are used as media centers, and Desktop is the standard, full-featured version.
32. Bodhi Linux
Another lightweight variation of Ubuntu, Bodhi is a true minimalist distribution that installs only a few pieces of software by default. That makes it great for users with older hardware or users who want to have a lot of say in which applications are installed; however, it might not be as good for new users who don't have familiarity with open source applications.
33. Linux Lite
As its name implies, this is another lightweight Linux distribution. Its website states, "The goal of Linux Lite is to introduce Windows users to an intuitively simple, alternative operating system. Linux Lite is a showcase for just how easy it can be to use linux."
34. Tiny Core Linux
If you have a really, really old or underpowered system, you may want to take a look at Tiny Core Linux. It weighs in at just 12MB but still offers a graphical interface, but doesn't include a lot of hardware support or applications. It's highly customizable, however, so users can easily add in just what they need while keeping the OS footprint small.