* Virtual economy, an economy simulated in a virtual world

The highly successful BattleTech line led to a series of video games, some of the first virtual reality gaming suites, called Virtual World ( created by a subdivision of the company known at the time of development as ESP, an acronym for " Extremely Secret Project ") and a Saturday-morning animated TV series.

They were particularly interested in virtual reality ( particularly the BattleTech Centers / Virtual World ) but also developed desktop computer games.

The virtual TV effect was provided by PVI Virtual Media Services using their L-VIS virtual graphics system.

* Returnil Virtual System can virtualize Windows based systems, needs only a restart to rebuild the virtual machine.

* Virtual Iron provides virtual machines for x86 that run unmodified operating systems, such as Windows, Red Hat and SUSE ; open source, implements native virtualization, which delivers near-native performance for x86 operating systems.

* James E. Smith, Ravi Nair, Virtual Machines: Versatile Platforms For Systems And Processes, Morgan Kaufmann, May 2005, ISBN 1-55860-910-5, 656 pages ( covers both process and system virtual machines )

In the book The Metaphysics of Virtual Reality by Michael R. Heim, seven different concepts of virtual reality are identified: simulation, interaction, artificiality, immersion, telepresence, full-body immersion, and network communication.

The book served to demystify the subject, making it more accessible to less technical researchers and enthusiasts, with an impact similar to that which his book The Virtual Community had on virtual community research lines closely related to VR.

In the book Infinite Reality: Avatars, Eternal Life, New Worlds, and the Dawn of the Virtual Revolution, Blascovich and Bailenson review the literature on the psychology and sociology behind life in virtual reality.

In addition, Mychilo S. Cline, in his book Power, Madness, and Immortality: The Future of Virtual Reality, argues that virtual reality will lead to a number of important changes in human life and activity.

* Virtual backup appliance, a virtual machine used to back up other virtual machines

However, approaches like Virtual Network Computing ( VNC ), NX and Xpra allow a virtual session to be reached from different X servers ( in a manner similar to GNU Screen in relation to terminals ), and other applications and toolkits provide related facilities.

System partitioning ( virtualization ) ranges from hardware partitions to isolated OS virtual partitions on cell-based servers, and HP Virtual Machines ( VMs ) on all Integrity servers.

; HP-UX 11i v3 Virtualization Server OE ( VSE-OE ): Delivers everything in BOE plus GlancePlus performance analysis and software mirroring, and all Virtual Server Environment software which includes virtual partitions, virtual machines, workload management, capacity advisor and applications.

Author Oliver Grau in his book Virtual Art: From Illusion to Immersion notes that the creation of artificial immersive virtual reality, arising as a result of technical exploitation of new inventions, is a long-standing human practice throughout the ages.

# REDIRECT Virtual circuit # Permanent and switched virtual circuits in ATM, frame relay, and X. 25

Called the Collaborative Virtual Workstation ( CVW ), this allowed the session to be set up in a virtual file cabinet and virtual rooms, and left as a persistent session that could be joined later.

Virtual management, brought about by the rise of the Internet, globalization, outsourcing, telecommuting, and virtual teams, is management of frequently widely dispersed groups and individuals with rarely, if ever, meeting them face to face.

With CP-67 on the IBM System / 360 Model 67 and Virtual Machine Facility / 370 ( VM / 370 ) on System / 370, IBM introduced the notion of virtual machine, where the operating system itself runs under the control of a hypervisor, instead of being in direct control of the hardware.

* Four new operating systems: DOS / VS ( DOS with virtual storage ), OS / VS1 ( OS / 360 MFT with virtual storage ), OS / VS2 ( OS / 360 MVT with virtual storage ) Release 1, termed SVS ( Single Virtual Storage ), and Release 2, termed MVS ( Multiple Virtual Storage ) and planned to be available 20 months later ( at the end of March 1974 ), and VM / 370 – the re-implemented CP / CMS

* Virtual reconstruction of Gaudí's first project for the building

* Mr. Lincoln's Virtual Library

* Mr. Deeds Goes to Town at Virtual History

Such a description language can be based on any computer programming language, such as Lisp, Pascal, or Java Virtual Machine bytecode.

* Griselda Pollock, Encounters in the Virtual Feminist Museum: Time, Space and the Archive.

Jewish Virtual Library.

This is encompassed in the concept of the Virtual Paths ( VP ) and Virtual Channels.

Every ATM cell has an 8-or 12-bit Virtual Path Identifier ( VPI ) and 16-bit Virtual Channel Identifier ( VCI ) pair defined in its header.

* Andrei Sakharov Museum in Moscow Virtual Tour.

This disclaimer also appears before the opening of their Sega Genesis and Super NES game as well as their Windows game Beavis and Butt-head in Virtual Stupidity.

* In 1995 an adventure game based on the series was released called Beavis and Butt-head in Virtual Stupidity on the PC, with a PlayStation port being released in Japan.

* Many video games, including Beavis and Butt-Head, Beavis and Butt-head in Virtual Stupidity, Beavis and Butt-Head: Bunghole in One, Calling All Dorks, Little Thingies, Wiener Takes All, and Beavis and Butt-Head Do U.

More recently, software with similar capabilities has been developed to allow manipulation of digital audio files stored on computers using turntables with special vinyl records ( e. g. Final Scratch, M-Audio Torq, Serato Scratch Live ) or computer interface ( e. g. Traktor DJ Studio, Mixxx, Virtual DJ ).

** With the introduction of Windows 7 ( Business, Ultimate, or Enterprise editions ), Windows XP Mode enables full compatibility with older programs supported under Windows XP via Microsoft Virtual PC.

* Parallel Virtual File System ( PVFS ) – A parallel file system for HPC clusters.

On December 31, 2007, the NES version of Bubble Bobble was released on Nintendo's Virtual Console service for the Wii.

; Armed Bear Common Lisp: A CL implementation that runs on the Java Virtual Machine.

Virtual memory is a system where all physical memory is controlled by the operating system.

Virtual memory systems usually include protected memory, but this is not always the case.

; Virtual Execution System ( VES ): The VES loads and executes CLI-compatible programs, using the metadata to combine separately generated pieces of code at runtime.

* VMKit part of Low Level Virtual Machine toolkit as of version 2. 3.