Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.

transient is a wrapper for QEMU allowing the creation of virtual machines with shared folder, ssh, and disk creation support.

Libx86emu is a small library to emulate x86 instructions. The focus here is not a complete emulation but to cover enough for typical firmware blobs. You can

1. intercept any memory access or directly map real memory ranges

2. intercept any i/o access, map real i/o ports, or block any real i/o

3. intercept any interrupt

4. add a hook to run after each instruction

5. recognize a special x86 instruction that can trigger logging

6. use integrated logging

qmpbackup is designed to create and restore full and incremental backups of running QEMU virtual machines via QMP, the QEMU Machine Protocol.

libosinfo is a GObject based library API for managing information about operating systems, hypervisors and the (virtual) hardware devices they can support. It includes a database containing device metadata and provides APIs to match/identify optimal devices for deploying an operating system on a hypervisor. Via GObject Introspection, the API is available in all common programming languages. Vala bindings are also provided.

QEMU is a generic machine emulator and virtualizer.

When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine---e.g., your own PC. By using dynamic translation, it achieves very good performance.

When used as a virtualizer, QEMU achieves near native performances by executing the guest code directly on the host CPU. QEMU supports virtualization when executing under the Xen hypervisor or using the KVM kernel module in Linux. When using KVM, QEMU can virtualize x86, server and embedded PowerPC, and S390 guests.

This Vagrant plugin enables reloading a Vagrant VM as a provisioning step.

The RISC-V Proxy Kernel, pk, is a lightweight application execution environment that can host statically-linked RISC-V ELF binaries. It is designed to support tethered RISC-V implementations with limited I/O capability and thus handles I/O-related system calls by proxying them to a host computer.

This package also contains the Berkeley Boot Loader, bbl, which is a supervisor execution environment for tethered RISC-V systems. It is designed to host the RISC-V Linux port.

This package provides a GTK+ support for open-vm-tools.

This package provides a Vagrant plugin that helps you reduce the amount of coffee you drink while waiting for boxes to be provisioned by sharing a common package cache among similar VM instances. Kinda like vagrant-apt_cache or this magical snippet but targeting multiple package managers and Linux distros.

This package provides a guest OS definition for Ganeti. It installs Debian or a derivative using debootstrap.

virt-what is a program which can be used to detect if the program is running in a virtual machine.

The program prints out a list of "facts" about the virtual machine, derived from heuristics. One fact is printed per line.

This package provides Python bindings to the libvirt virtualization library.

LXCFS is a small FUSE file system written with the intention of making Linux containers feel more like a virtual machine. It started as a side project of LXC but can be used by any run-time.

umoci is a tool that allows for high-level modification of an Open Container Initiative (OCI) image layout and its tagged images.

vagrant-spec is a both a specification of how Vagrant and its various components should behave as well as a library of testing helpers that let you write your own unit and acceptance tests for Vagrant.

emu.qmp is a QEMU Monitor Protocol (QMP) library written in Python. It is used to send QMP messages to running QEMU emulators. It can be used to communicate with QEMU emulators, the QEMU Guest Agent (QGA), the QEMU Storage Daemon (QSD), or any other utility or application that speaks QMP.

This package provides a guest OS definition for Ganeti that uses Guix to build virtual machines.

Osinfo-db provides the database files for use with the libosinfo library. It provides information about guest operating systems for use with virtualization provisioning tools

Looking Glass allows the use of a KVM (Kernel-based Virtual Machine) configured for VGA PCI Pass-through without an attached physical monitor, keyboard or mouse. It displays the VM's rendered contents on your main monitor/GPU.

The agent gathers some guest information, and writes them to xenstore so tooling in dom0 can read it. The default behavior is to be compatible with the XAPI toolstack as currently used in XCP-ng and Citrix Hypervisor/Xenserver, and thus roughly follow what xe-guest-utilities is doing.

The XenServer guest utilities enable a Xen-based hypervisor, (Citrix XenServer, XCP-NG, etc.) to work with a Xen-enabled Unix-like guest VMs. This allows the guest to share information about its state back to the host, such IP address, memory usage, etc. and allows the host to inform the guest VM about events that change the virtualized hardware, such as hotplugging.

Spike, the RISC-V ISA Simulator, implements a functional model of one or more RISC-V harts.

Bubblewrap is aimed at running applications in a sandbox, restricting their access to parts of the operating system or user data such as the home directory. Bubblewrap always creates a new mount namespace, and the user can specify exactly what parts of the file system should be made visible in the sandbox. These directories are mounted with the nodev option by default and can be made read-only.