Megaventory is web-based so it is compatible with any operating system able to run a modern browser. Any recent version of the Windows operating system, the OS X (Leopard onwards) and most of the popular Linux distributions (Ubuntu, Fedora, Debian, etc.) are operating systems with such browsers installed by default. As such Megaventory can be accessed from such terminals.
Mobile browsers are also fully supported. As such, Megaventory can be accessed by any mobile device (phone or tablet).
Megaventory runs entirely online so an internet connection is required at all times while at the same time no download and installation is necessary.