Hotplug2 is aimed at early Linux user space, i.e. initramfs or initrd, and possibly also at embedded devices (such as WRT-like routers) or very weak machines, such as 386/486. It connects to the uevent netlink socket and reads events. The application generally operates in two modes: dumb and smart.
Yard is a suite of Perl scripts for creating rescue disks (also called bootdisks) for Linux. A rescue disk is a self-contained Linux kernel and filesystem on a floppy, usually used when you can't (or don't want to) boot off your hard disk. A rescue disk usually contains utilities for diagnosing and manipulating hard disks and filesystems.
The cryptoswap package supports creating an encrypted swap partition when a system boots. This may be necessary on systems that use encrypted filesystems because plaintext secrets may be written to disk when memory is swapped to disk. The project also includes the ability to build a Linux initrd that supports booting with an encrypted root filesystem.
cfgsh is a configuration shell utility that is intended to be used for configuring embedded systems. It is meant to replace the normal combination of utilities including ifconfig, route, startup scripts, and configuration files with a single program that implements the same functionality in a manner more consistent with the embedded system world.