Rastendo is a project that was started to provide people with a pre-configured Raspberry Pi running RetroPie. The goal is to make it as easy as possible for people who want a retro gaming console, but are not inclined to build one themselves.
Rastendo is not an attempt to take credit for other's work. You are paying for the hardware and the service of configuring the software that runs on it. Establishing a brand was necessary to sell the product online and to help control for quality.
Rastendo is made possible thanks to the hard work of these groups:
The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python. It’s capable of doing everything you’d expect a desktop computer to do, from browsing the internet and playing high-definition video, to making spreadsheets, word-processing, and playing games.
The RetroPie Project is a collection of works that all have the overall goal to turn the Raspberry Pi into a dedicated retro-gaming console. The project uses Raspbian as OS at the bottom and integrates a large set of emulators for a wide variety of computer systems from the past decades.
This is the graphical front-end installed by RetroPie. It is designed to allow you to use your Raspberry Pi as if it were a retro console - with only a controller, not requiring a keyboard.
Retroarch & Libretro
RetroArch is the official reference frontend for the libretro API (application program interface). Libretro is a simple but powerful development interface that allows for the easy creation of emulators, games and multimedia applications that can plug straight into any libretro-compatible frontend.