Kiwix is described as 'enables you to have the whole Wikipedia at hand wherever you go! You don't need Internet, everything is stored on your computer, USB flash drive or DVD!' and is a popular app in the News & Books category. There are more than 10 alternatives to Kiwix for a variety of platforms, including Linux, Online / Web-based, Windows, Android and iPhone. The best alternative is Wikipedia, which is both free and Open Source. Other great apps like Kiwix are WikiSpooks.com (Free, Open Source), WikiIndex (Free, Open Source), Aard Dictionary (Free, Open Source) and WikiTaxi (Free Personal).