DietPi is Lightweight, Easy to Use Debian Based Distribution for Raspberry Pi, ODROID, and Orange Pi Boards
Raspberry Pi, Hardkernel ODROID, and Orange Pi are some of the most popular and cost effective development boards on the market today, and one British developer, going under Fourdee nickname, has released a lightweight distribution called DietPi working for all Rasbperry Pi boards, ODROID-C1(+), ODROID-XU3/XU4, and Orange Pi PC, with Orange Pi 2 and Orange Pi Plus support coming soon, as well as a VMWare virtual machine also available for evaluation.
The compressed downloads are about 80 to 100MB depending on the target, the image that can be dump with dd or Win32DiskImager requires a 1GB or greater micro SD card as the image itself is about 500MB large, Internet access (Ethernet or Wifi), and optionally a USB Drive to allow installation on a USB drive for better performance, which of course does not apply if you have an eMMC module with your ODROID board.
The image also contains some scripts to easily configure the system (DietPi-Config), or install programs (DietPi-Software) such as LXDE desktop environment, Kodi, Transmission bitTorrent server and so on. Some options will be specific to some boards, as for example Kodi won’t run properly on Orange Pi boards for now.
Other notable scripts include DietPi-Backup, DietPi-Sync to duplicate directories, DietPi-Nice to assign priority levels to programs, and DietPi-Update System that automatically checks for updates, and install them from the network. You can also customize the level of logging with DietPi-Rramlog in order to optimize performance, and WiFi support is built-in in the image, and configurable with DietPi-Config.