libguestfs is a set of tools for accessing and modifying virtual machine (VM) disk images. You can use this for viewing and editing files inside guests, scripting changes to VMs, monitoring disk used/free statistics, creating guests, P2V, V2V, performing backups, cloning VMs, building VMs, formatting disks, resizing disks, and much more.

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.

runc is a command line client for running applications packaged according to the Open Container Initiative (OCI) format and is a compliant implementation of the Open Container Initiative specification.

libvirt-glib wraps the libvirt library to provide a high-level object-oriented API better suited for glib-based applications, via three libraries:

1. libvirt-glib - GLib main loop integration & misc helper APIs

2. libvirt-gconfig - GObjects for manipulating libvirt XML documents

3. libvirt-gobject - GObjects for managing libvirt objects

This package provides the Xen Virtual Machine Monitor which is a hypervisor.

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

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.

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.

skopeo is a command line utility providing various operations with container images and container image registries. It can:

1. Copy container images between various containers image stores, converting them as necessary.

2. Convert a Docker schema 2 or schema 1 container image to an OCI image.

3. Inspect a repository on a container registry without needlessly pulling the image.

4. Sign and verify container images.

5. Delete container images from a remote container registry.

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

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.

open-vm-tools is a set of services and modules that enable several features in VMware products for better management of, and seamless user interactions with, guests.

open-vm-tools enables the following features in VMware products:

• The ability to perform virtual machine power operations gracefully.

• Execution of VMware provided or user configured scripts in guests during various power operations.

• The ability to run programs, commands and file system operation in guests to enhance guest automation.

• Authentication for guest operations.

• Periodic collection of network, disk, and memory usage information from the guest.

• Generation of heartbeat from guests to hosts so VMware's HA solution can determine guests' availability.

• Clock synchronization between guests and hosts or client desktops.

• Quiescing guest file systems to allow hosts to capture file-system-consistent guest snapshots.

• Execution of pre-freeze and post-thaw scripts while quiescing guest file systems.

• The ability to customize guest operating systems immediately after powering on virtual machines.

• Enabling shared folders between host and guest file systems on VMware Workstation and VMware Fusion.

• Copying and pasting text, graphics, and files between guests and hosts or client desktops.

V is a systems programming language. It provides memory safety and thread safety guarantees with minimal abstraction.

This is a VNC server for wlroots-based Wayland compositors. It attaches to a running Wayland session, creates virtual input devices, and exposes a single display via the RFB protocol. The Wayland session may be a headless one, so it is also possible to run wayvnc without a physical display attached.

TurboVNC is a high-speed version of VNC derived from TightVNC, with which it remains compatible. It contains a variant of Tight encoding that is tuned to maximize performance for image-intensive applications (such as VirtualGL, video applications, and image editors) while still providing excellent performance for other types of applications. Some of its unique features are:

• a user-facing vncserver command;

• the ability to capture keyboard keys even when not in full screen mode;

• a full screen mode that is compatible with ratpoison*

*Although due to a quirk in Java, you'll want to set the _JAVA_AWT_WM_NONREPARENTING environment variable when using it with ratpoison.

This package provides LibVNCServer and LibVNCClient. These are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program.

NeatVNC is a lightweight VNC server library, supporting authentication, SSH tunneling, and ZRLE or Tight encoding.

x11vnc allows one to view and interact with real remote X displays (i.e. a display corresponding to a physical monitor, keyboard, and mouse) with any VNC viewer.

Remmina is a client to use other desktops remotely. RDP, VNC, SPICE, NX, XDMCP, SSH and EXEC network protocols are supported.

n2n is a light VPN software which makes it easy to create virtual networks bypassing intermediate firewalls.

Openfortivpn is a client for PPP+SSL VPN tunnel services. It spawns a pppd process and operates the communication between the gateway and this process. It is compatible with Fortinet VPNs.

StrongSwan is an IPsec implementation originally based upon the FreeS/WAN project. It contains support for IKEv1, IKEv2, MOBIKE, IPv6, NAT-T and more.

This package provides the user-space command-line tools for using and configuring WireGuard tunnels.

WireGuard is a simple and fast general-purpose VPN that securely encapsulates IP packets over UDP. It aims to be as easy to configure and deploy as SSH. VPN connections are made simply by exchanging public keys and can roam across IP addresses.

This is the official command-line interface for ProtonVPN, a secure point-to-point virtual private networking (VPN) service with a gratis tier. It can automatically find and connect to the fastest servers or use Tor over VPN. The gratis tier offers unlimited bandwidth for up to 10 devices.