Hercules is an emulator for the IBM System/370, ESA/390, and
z/Architecture series of mainframe computers. It is capable of running
any IBM operating system and applications that a real system will run,
as long as the hardwre needed is emulated. Hercules can emulate FBA and
CKD DASD, tape, printer, card reader, card punch, channel-to-channel
adapter, and printer-keyboard and 3270 terminal devices.

Hercules information can be found on the web at
http://www.conmicro.cx/hercules .

QEMU is an extremely well-performing CPU emulator that allows you to
choose between simulating an entire system and running userspace
binaries for different architectures under your native operating
system. It currently emulates x86, ARM, PowerPC and SPARC CPUs as well
as PC and PowerMac systems.

snIPL - simple network IPL (Linux Image Control for LPAR / VM) - is a
command line tool which serves as remote linux image control using
basic Support Element (SE) functions or basic z/VM system management
functions (available since z/VM 4.4) on one or more images.

spicctrl is a utility that uses the Sony Programmable I/O Control
device (SPIC), which is part of most Sony Vaio laptops, to perform
several functions, such as changing the display brightness, controlling
Bluetooth power, or reporting battery status.

luksipc is a tool to convert (unencrypted) block devices to (encrypted) LUKS devices in-place. This means the conversion is performed without the need of copying all data somewhere else, creating a LUKS container, creating a new filesystem on the mapped LUKS device, and copying all data back. Instead, the process is reduced to:

- unmounting the filesystem
- resizing the filesystem to shrink about 2 megabytes (1028 kB for current LUKS versions to be precise)
- running luksipc
- adding custom keys to the LUKS keyring