The btrfs heatmap script creates a visualization of how a btrfs filesystem is using the underlying disk space of the block devices that are added to it.

Chafa is a command-line utility that converts all kinds of images, including animated image formats like GIFs, into ANSI/Unicode character output that can be displayed in a terminal.

gdnsd is an Authoritative-only DNS server. The initial g stands for Geographic, as gdnsd offers a plugin system for geographic (or other sorts of) balancing, redirection, and service-state-conscious failover.