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1. Virtualbox Additions Windows 98 Download For Windows 7

Windows 98 installation in Virtual Box. It's free and easy to use. Later on you will need to procure a Windows 98 installation disc (within license key) and a video driver - you can download from the links below. Unfortunately Virtual Box does not provide 'guest additions' for Windows based systems. You will notice the. Jul 28, 2014. Windows 3.11 running in VirtualBox. Just point your browser to Kirsel's amazing website and download all the image files you'll need to install Windows 3.1x in VirtualBox. However, you might manage to get part of the guest additions to load in Windows ME before you get an error message. A few general information about this problem with VBox 4.3.14: Only VBox on Windows is.

VirtualBox is a professional-grade, open-source virtualization software. If you're not happy with the virtualization options available to you in the paid software marketplace, then exploring VirtualBox might be for you.

Pros

Range of supported systems: VirtualBox is available on all the major operating systems. This allows you to take advantage of open-source virtualization whether your platform is Mac, Windows, Linux, or Solaris. You can then run most versions of Windows, DOS, Linux, or Solaris as a virtual system.

Lots of info: One of the typical advantages of open-source software is that the user community creates a wide range of help and technical documents to assist people in the software's operation. VirtualBox is no exception, and there is ample documentation available to anyone who needs help with their VirtualBox setup.

Cons

Operating system integration: The paid virtualization solutions have much better integration between the host system and the guest operating system. For instance, using VMWare or Parallels, you can drag and drop files from one system to the other. You can't do that with VirtualBox.

Lack of active support: Virtualization software is complicated and can easily have things go wrong with it. When this happens with a product that you're paying for, you have access to a lot of hands-on technical support. That doesn't exist with open-source products. If you run into a conflict, you'll be stuck trying to sort it out on your own.

Bottom Line

If you're highly technical and capable of using online resources to troubleshoot and configure your own software, then VirtualBox could work for you. On the other hand, if you need a fully-packaged solution with good support, VirtualBox might be too tricky.

What do you need to know about free software?

Oracle VM VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and Innotek VirtualBox) is a free and open-sourcehostedhypervisor for x86 virtualization, developed by Oracle Corporation. Created by Innotek GmbH, it was acquired by Sun Microsystems in 2008, which was, in turn, acquired by Oracle in 2010.

VirtualBox may be installed on Windows, macOS, Linux, Solaris and OpenSolaris. There are also ports to FreeBSD^[3] and Genode.^[4] It supports the creation and management of guest virtual machines running Windows, Linux, BSD, OS/2, Solaris, Haiku, and OSx86,^[5] as well as limited virtualization of macOS guests on Apple hardware.^[6][7] For some guest operating systems, a 'Guest Additions' package of device drivers and system applications is available,^[8][9] which typically improves performance, especially that of graphics.^[10]

• 3Emulated environment
• 4Feature set

History[edit]

VirtualBox was first offered by Innotek GmbH from Weinstadt, Germany, under a proprietary software license, making one version of the product available at no cost for personal or evaluation use, subject to the VirtualBox Personal Use and Evaluation License (PUEL).^[11] In January 2007, based on counsel by LiSoG, Innotek GmbH released VirtualBox Open Source Edition (OSE) as free and open-source software, subject to the requirements of the GNU General Public License (GPL), version 2.^[12]

Innotek GmbH also contributed to the development of OS/2 and Linux support in virtualization^[13] and OS/2 ports^[14] of products from Connectix which were later acquired by Microsoft. Specifically, Innotek developed the 'additions' code in both Windows Virtual PC and Microsoft Virtual Server, which enables various host–guest OS interactions like shared clipboards or dynamic viewport resizing.

Sun Microsystems acquired Innotek in February 2008.^[15][16][17]

Oracle Corporationacquired Sun in January 2010 and re-branded the product as 'Oracle VM VirtualBox'.^[18][19][20]

Licensing[edit]

Virtualbox Additions Windows 98 Download For Windows 7

The core package is, since version 4 in December 2010, free software under GNU General Public License version 2 (GPLv2). The separate 'VirtualBox Oracle VM VirtualBox extension pack' providing support for USB 2.0 and 3.0 devices, Remote Desktop Protocol (RDP), disk encryption, NVMe and Preboot Execution Environment (PXE) boot is under a proprietary license, called Personal Use and Evaluation License (PUEL), which permits use of the software for personal use, educational use, or evaluation, free of charge.^[21] Since VirtualBox version 5.1.30^[22] Oracle defines personal use as the installation of the software on a single host computer for non-commercial purposes.^[23]

Prior to version 4, there were two different packages of the VirtualBox software. The full package was offered free under the PUEL, with licenses for other commercial deployment purchasable from Oracle. A second package called the VirtualBox Open Source Edition (OSE) was released under GPLv2. This removed the same proprietary components not available under GPLv2.^[23][24]

Building the BIOS for VirtualBox since version 4.2^{[citation needed]} requires the use of the Open Watcom compiler,^[25] for which the Sybase Open Watcom Public License is approved as 'Open Source' by the Open Source Initiative^[26] but not as 'free' by the Free Software Foundation or under the Debian Free Software Guidelines.^[25][27]

Although VirtualBox has experimental support for Mac OS X guests, the end user license agreement of Mac OS X does not permit the operating system to run on non-Apple hardware, and this is enforced within the operating system by calls to the Apple System Management Controller (SMC) in all Apple machines, which verifies the authenticity of the hardware.^[28]

Emulated environment[edit]

Users of VirtualBox can load multiple guest OSes under a single host operating-system (host OS). Each guest can be started, paused and stopped independently within its own virtual machine (VM). The user can independently configure each VM and run it under a choice of software-based virtualization or hardware assisted virtualization if the underlying host hardware supports this. The host OS and guest OSs and applications can communicate with each other through a number of mechanisms including a common clipboard and a virtualized network facility. Guest VMs can also directly communicate with each other if configured to do so.^[29]

Software-based virtualization[edit]

In the absence of hardware-assisted virtualization, VirtualBox adopts a standard software-based virtualization approach. This mode supports 32-bit guest OSs which run in rings 0 and 3 of the Intel ring architecture.

• The system reconfigures the guest OS code, which would normally run in ring 0, to execute in ring 1 on the host hardware. Because this code contains many privileged instructions which cannot run natively in ring 1, VirtualBox employs a Code Scanning and Analysis Manager (CSAM) to scan the ring 0 code recursively before its first execution to identify problematic instructions and then calls the Patch Manager (PATM) to perform in-situ patching. This replaces the instruction with a jump to a VM-safe equivalent compiled code fragment in hypervisor memory.
• The guest user-mode code, running in ring 3, generally runs directly on the host hardware in ring 3.

In both cases, VirtualBox uses CSAM and PATM to inspect and patch the offending instructions whenever a fault occurs. VirtualBox also contains a dynamic recompiler, based on QEMU to recompile any real mode or protected mode code entirely (e.g. BIOS code, a DOS guest, or any operating system startup).^[30]

Using these techniques, VirtualBox can achieve a performance comparable to that of VMware.^[31][32]

Hardware-assisted virtualization[edit]

VirtualBox supports both Intel's VT-x and AMD's AMD-V hardware-assisted virtualization. Making use of these facilities, VirtualBox can run each guest VM in its own separate address-space; the guest OS ring 0 code runs on the host at ring 0 in VMX non-root mode rather than in ring 1.

VirtualBox supports some guests (including 64-bit guests, SMP guests and certain proprietary OSs) only on hosts with hardware-assisted virtualization.

Device virtualization[edit]

The system emulates hard disks in one of three disk image formats:

1. VDI: This format is the VirtualBox-specific VirtualBox Disk Image and stores data in files bearing a '.vdi' filename extension.
2. VMDK: This open format is used by VMware products such as VMware Workstation and VMware Player. It stores data in one or more files bearing '.vmdk' filename extensions. A single virtual hard disk may span several files.
3. VHD: This format is used by Windows Virtual PC and Hyper-V, and is the native virtual disk format of the Microsoft Windows operating system, starting with Windows 7 and Windows Server 2008 R2. Data in this format are stored in a single file bearing the '.vhd' filename extension.

A VirtualBox virtual machine can, therefore, use disks previously created in VMware or Microsoft Virtual PC, as well as its own native format. VirtualBox can also connect to iSCSI targets and to raw partitions on the host, using either as virtual hard disks. VirtualBox emulates IDE (PIIX4 and ICH6 controllers), SCSI, SATA (ICH8M controller) and SAS controllers to which hard drives can be attached.

VirtualBox has supported Open Virtualization Format (OVF) since version 2.2.0 (April 2009).^[33]

Both ISO images and host-connected physical devices can be mounted as CD/DVD drives. For example, the DVD image of a Linux distribution can be downloaded and used directly by VirtualBox.

By default, VirtualBox provides graphics support through a custom virtual graphics-card that is VESA compatible. The Guest Additions for Windows, Linux, Solaris, OpenSolaris, or OS/2 guests include a special video-driver that increases video performance and includes additional features, such as automatically adjusting the guest resolution when resizing the VM window^[34]or desktop composition via virtualized WDDM drivers .

For an Ethernet network adapter, VirtualBox virtualizes these Network Interface Cards:^[35]

• AMD PCnet PCI II (Am79C970A)
• AMD PCnet-Fast III (Am79C973)
• Intel Pro/1000 MT Desktop (82540EM)
• Intel Pro/1000 MT Server (82545EM)
• Intel Pro/1000 T Server (82543GC)
• Paravirtualized network adapter (virtio-net)

The emulated network cards allow most guest OSs to run without the need to find and install drivers for networking hardware as they are shipped as part of the guest OS. A special paravirtualized network adapter is also available, which improves network performance by eliminating the need to match a specific hardware interface, but requires special driver support in the guest. (Many distributions of Linux ship with this driver included.) By default, VirtualBox uses NAT through which Internet software for end-users such as Firefox or ssh can operate. Bridged networking via a host network adapter or virtual networks between guests can also be configured. Up to 36 network adapters can be attached simultaneously, but only four are configurable through the graphical interface.

For a sound card, VirtualBox virtualizes Intel HD Audio, Intel ICH AC'97 and SoundBlaster 16 devices.^[36]

A USB 1.1 controller is emulated so that any USB devices attached to the host can be seen in the guest. The proprietary extension pack adds a USB 2.0 or USB 3.0 controllers and, if VirtualBox acts as an RDP server, it can also use USB devices on the remote RDP client as if they were connected to the host, although only if the client supports this VirtualBox-specific extension (Oracle provides clients for Solaris, Linux and Sun Ray thin clients that can do this, and have promised support for other platforms in future versions).^[37]

Feature set[edit]

• 64-bit guests (hardware virtualization support is required)
• Seamless mode — the ability to run virtualized applications side by side with normal desktop applications
• Shared clipboard
• Shared folders
• Special drivers and utilities to facilitate switching between systems
• Command line interaction (in addition to the GUI)
• Public API (Java, Python, SOAP, XPCOM) to control VM configuration and execution^[38]
• Nested paging for AMD-V and Intel VT (only for processors supporting SLAT and with SLAT enabled)
• Limited support for 3D graphics acceleration (including OpenGL up to (but not including) 3.0 and Direct3D 9.0c via Wine's Direct3D to OpenGL translation)
• SMP support (up to 32 virtual CPUs per virtual machine), since version 3.0
• Teleportation (aka Live Migration)
• 2D video output acceleration (not to be mistaken with video decoding acceleration), since version 3.1
• EFI has been supported since version 3.1 (Windows 7^[39][40] guests are not supported)^[41]

Storage emulation features

• NCQ support for SATA, SCSI and SAS raw disks and partitions
• SATA disk hotplugging
• Pass-through mode for solid-state drives
• Pass-through mode for CD/DVD/BD drives — allows users to play audio CDs, burn optical disks, and play encrypted DVD discs
• Can disable host OS I/O cache
• Allows limitation of IO bandwidth
• PATA, SATA, SCSI, SAS, iSCSI, floppy disk controllers
• VM disk image encryption using AES128/AES256

Storage support

• Raw hard disk access — allows physical hard disk partitions on the host system to appear in the guest system
• VMware Virtual Machine Disk (VMDK) format support — allows exchange of disk images with VMware
• Microsoft VHD support
• QEMU qed and qcow disks
• HDD format disks (only version 2; versions 3 and 4 are not supported) used by Parallels virtualization products

Since version 3.2

• Mac OS X Server guest support — experimental
• Memory ballooning (not available on Solaris hosts)
• RAM deduplication (Page Fusion) for Windows guests on 64-bit hosts
• CPU hot-plugging for Linux (hot-add and hot-remove) and certain Windows guests (hot-add only)
• Deleting snapshots while the VM is running
• Multi-monitor guest setups in the GUI, for Windows guests
• LSI Logic SAS controller emulation
• Remote Desktop Protocol (RDP) video acceleration via a non-free extension
• Run and control guest applications from the host — for automated software deployments

Since version 4.0

• The PUEL/OSE separation was abandoned in favor of an open source base product and a closed source extension pack that can be installed on top of the base product. As part of this change, additional components of VirtualBox were made open source (installers, documentation, device drivers)
• Intel HD audio codec emulation
• Intel ICH9 chipset emulation
• A new VM storage scheme where all VM data is stored in one single folder to improve VM portability
• Several UI enhancements including a new look with VM preview and scale mode
• On 32-bit hosts, VMs can each use more than 1.5 GB of RAM
• In addition to OVF, the single file OVA format is supported
• CPU use and I/O bandwidth can be limited per VM
• Support for Apple DMG images (DVD)
• Multi-monitor guest setups for Linux/Solaris guests (previously Windows only)
• Resizing of disk image formats from Oracle, VDI (VirtualBox disk image), and Microsoft, VHD (Virtual PC hard disk)

Since version 4.1

• Windows Aero support (experimental)
• Virtual machine cloning

Since version 4.2

• Virtual machine groups — allows management of a group of virtual machines as a single unit (power them on or off, take snapshots, etc.)
• Some VM settings can be altered during VM execution
• Support up to 36 NICs in case of the ICH9 chipset
• Support for limiting network I/O bandwidth
• Can automatically run VMs on host system startup (except on Windows hosts)

Since version 4.3

• VM video-capture support
• Host touch device support (GUI passes host touch events to guest)/USB virtualization of such devices

Since version 5.0^[42]

• Paravirtualization support for Windows and Linux guests to improve time-keeping accuracy and performance
• USB3 controller based on Intel's hardware implementation.^[43] It's supported by any Windows version starting from Windows 7, any Linux kernel starting from 2.6.31 and Mac OS X starting from version 10.7.4.^{[citation needed]}
• Bidirectional drag and drop support for Windows, Linux and Solaris guests
• VM disk image encryption via a non-free extension
• VM output scaling and HiDPI displays support
• Hotplugging of SATA disks using GUI
• USB traffic capturing
• VMs can be disconnected from a GUI session and run in background^[44]
• AVX, AVX-2, AES-NI, SSE 4.1/4.2 instructions (if supported by the host CPU)

Since version 6.0^[45]

• Support for exporting virtual machines to Oracle Cloud
• A file manager which allows to control the guest file system and copy files from/to it
• VMSVGA GPU driver for Linux hosts
• Surround speakers setup support
• Support for hardware-assisted nested virtualization on AMD CPUs

Limitations[edit]

• VirtualBox has a very low transfer rate to and from USB2 devices.^[46][47]
• Despite being an open source product, some of its features are available only in a binary form under a commercial license (see 'VirtualBox Extension Pack' below).
• USB3 devices pass through is not supported by older guest OSes like Windows Vista and Windows XP due to the lack of drivers.
• Guest Additions for MacOS are unavailable at this time.^[48]
• Guest Additions for Windows 9x (Windows 95, 98 and ME) are not available. This results in poor performance due to the lack of graphics acceleration with the default 16-bit color mode (external third-party software is available^[49][50][51] to enable support for 32-bit color mode, resulting in better performance).^[52][53][54]
• EFI support for guest systems is limited (incomplete EFI is supported — full support for EFI or support for UEFI is unavailable).^[48][41]
• Only older versions of DirectX and OpenGL passthrough are supported (the feature can be enabled using the 3D Acceleration option for each VM individually).^[55]
• Video RAM is limited to 128 MiB (256 MiB with 2D Video Acceleration enabled) due to technical difficulties^[56] (merely changing the GUI to allow the user to allocate more video RAM to a VM or manually editing the configuration file of a VM won't work and will result in a fatal error^[56]).

VirtualBox Extension Pack[edit]

Some features require the installation of the closed-source 'VirtualBox Extension Pack':^[1]

• Support for a virtual USB 2.0/3.0 controller (EHCI/xHCI)
• VirtualBox RDP: support for the proprietary remote connection protocol developed by Microsoft and Citrix Systems.
• PXE boot for Intel cards.
• VM disk image encryption

While Guest Additions are installed within each suitable guest virtual machine, the Extension Pack is installed on the host running VirtualBox.

Host OS support[edit]

VirtualBox can be run under Windows, GNU/Linux, macOS, Sun Solaris and FreeBSD.

Since version 5 (July 2015), VirtualBox has stated that they are dropping support for Windows XP host,^[57] thus leaving its users with Windows XP hosts vulnerable to flaws of earlier releases.

See also[edit]

References[edit]

1. ^ ^ab'Downloads – Oracle VM VirtualBox'.
2. ^ ^ab'Download VirtualBox'. VirtualBox.org. Oracle.
3. ^'VirtualBox – FreeBSD Wiki'. Wiki.freebsd.org. 2009-06-16. Retrieved 2009-07-04.
4. ^'Release notes for the Genode OS Framework 14.02'. Genode Labs. February 28, 2014. Retrieved March 19, 2014.
5. ^'Guest_OSes'. VirtualBox.org. 2009-06-12. Retrieved 2009-07-04.
6. ^'How to Install Mac OS X Snow Leopard in VirtualBox on Windows 7'.
7. ^Purdy, Kevin (May 4, 2010). 'VirtualBox 3.2 Beta Virtualizes Mac OS X (On Macs)'. Lifehacker.
8. ^'Chapter 4: Guest Additions'. VirtualBox.
9. ^'Oracle VM VirtualBox 4.3 Now Available' (Press release). Oracle Corporation. 2013-10-15. Retrieved 2014-10-15. Generally available today, Oracle VM VirtualBox 4.3 delivers the latest enhancements to the world's most popular, free and open-source, cross-platform virtualization software.
10. ^'Run Ubuntu Linux Within Windows Using VirtualBox'. linux.about.com.
11. ^'VirtualBox_PUEL – VirtualBox'. VirtualBox. 2008-09-10. Retrieved 2009-07-04.
12. ^'GPL'. VirtualBox. Retrieved 2009-07-04.
13. ^Ong, Ronny. 'Additions Version History'. Newsgroup: microsoft.public.virtualpc. Retrieved 2009-07-04.
14. ^'Connectix Announces First Virtual Computing Solution for OS/2 Users; Virtual PC Lets Enterprises Run OS/2 and Windows Concurrently on a Single PC Business Wire Find Articles at BNET'. Findarticles.com. 2002-07-01. Retrieved 2009-07-04.
15. ^'Sun Microsystems Announces Agreement to Acquire Innotek, Expanding Sun xVM Reach to the Developer Desktop' (Press release). Sun Microsystems. February 12, 2008. Retrieved 2008-02-12.
16. ^'E-Commerce News: Business: Sun Gets Desktop Virtualization Chops With Innotek Buy'. Ecommercetimes.com. Retrieved 2009-07-04.
17. ^'Sun Welcomes Innotek'. Sun Microsystems, Inc. Retrieved 2008-02-26. On February 20 Sun completed the acquisition of Innotek
18. ^'Oracle and Virtualization'. Oracle Corporation. Retrieved 2010-01-30.
19. ^'VirtualBox Joins Oracle's Enterprise Virtualization Portfolio'. systemnews. February 25, 2010. Retrieved March 6, 2010.^{[dead link]}
20. ^Hawley, Adam (February 26, 2010). 'The Oracle VM Product Line Welcomes Sun!'. Oracle Virtualization Blog. Oracle Corporation. Archived from the original on 2010-04-07. Retrieved March 6, 2011.
21. ^'VirtualBox_PUEL'. VirtualBox. 2010-04-19. Retrieved 2011-04-20.
22. ^'PUEL no longer allowing commercial use with VB extension pack 5.1.30'. forums.virtualbox.org. Retrieved 2019-01-18.
23. ^ ^ab'Licensing: Frequently Asked Questions'. VirtualBox. Retrieved 2017-11-28.
24. ^'Editions'. VirtualBox. Retrieved 2009-07-04.
25. ^ ^ab'Copyright file of Virtualbox'. Debian. 2016-01-26. Retrieved 2016-07-24.
26. ^'Open Source Licenses by Category'. Palo Alto, California: Open Source Initiative. Non-reusable licenses. Retrieved 2016-07-24.
27. ^'Various Licenses and Comments about Them'. Boston, Massachusetts: Free Software Foundation. Nonfree Software Licenses. Retrieved 2016-07-24.
28. ^'Interview with Andy Hall, Product Manager for Oracle VM VirtualBox'.
29. ^'Internal Networking'. VirtualBox. Retrieved 2013-07-31.
30. ^'VirtualBox Manual, Section 10.4 Details about software virtualization'. VirtualBox. Retrieved 2011-04-25.
31. ^Dr. Diedrich, Oliver (2007-01-15). 'heise open – 15.01.07 – VirtualBox'. Heise.de. Retrieved 2009-07-04.
32. ^Perlow, Jason (2010-05-21). 'Virtualization Smackdown 2: Oracle VM VirtualBox 3.2 vs. VMware Workstation 7.1'. ZDNET. Archived from the original on 2010-05-24. Retrieved 2010-05-24.
33. ^'VirtualBox changelog'. Archived from the original on 2010-02-05. Retrieved 2010-02-18.
34. ^'Chapter 4. Guest Additions'. VirtualBox. Retrieved 2011-01-17.
35. ^'Chapter 6. Virtual networking'. VirtualBox. Retrieved 2011-01-17.
36. ^'Chapter 3. Configuring Virtual Machines'. VirtualBox. Retrieved 2011-01-17.
37. ^'VirtualBox 4.1.4 Manual – Chapter 7 Remote Virtual Machines'. Oracle. 2011-10-03. Retrieved 2011-11-19.
38. ^'Python API to the VirtualBox VM'. Sun Microsystems. 2008-09-05. Archived from the original on 2008-09-10. Retrieved 2008-09-06.
39. ^'#7702 (UEFI support for Windows guests) – Oracle VM VirtualBox'. www.virtualbox.org. Retrieved 2019-01-11.
40. ^'Chapter 3. Configuring Virtual Machines'. www.virtualbox.org. Retrieved 2019-01-11.
41. ^ ^ab'Chapter 3. Configuring virtual machines'. www.virtualbox.org. Retrieved 2016-04-14.
42. ^'Changelog for VirtualBox 5.0'.
43. ^'USB 3.0 Driver: Intel USB 3.0 eXtensible Host Controller Driver for Intel 7 Series/C216 Chipset Family'.
44. ^'New separate GUI / VMM mode'.
45. ^'Changelog-6.0 – Oracle VM VirtualBox'. www.virtualbox.org. Retrieved 2018-12-19.
46. ^'#2973 (USB extremely slow with USB-2.0 (very similar to #464)) – Oracle VM VirtualBox'. Oracle. Retrieved 10 October 2014.
47. ^'#4261 (Slow transfer speeds from USB disk) – Oracle VM VirtualBox'. Oracle. Retrieved 10 October 2014.
48. ^ ^ab'Chapter 14. Known limitations'. www.virtualbox.org. Retrieved 2017-03-28.
49. ^'Unofficial Windows 98 Second Edition Service Pack'. www.majorgeeks.com. Retrieved 2017-03-28.
50. ^'98SE Option Pack'. www.majorgeeks.com. Retrieved 2017-03-28.
51. ^'Windows 9x Power Pack'. www.majorgeeks.com. Retrieved 2017-03-28.
52. ^'virtualbox.org • View topic - Tutorial: Windows 95/98 guest OSes'. forums.virtualbox.org. Retrieved 2017-03-28.
53. ^'virtualbox.org • View topic - Win98SE with ACPI - Success At Last!'. forums.virtualbox.org. Retrieved 2017-03-28.
54. ^'virtualbox.org • View topic - Windows 98SE step by step'. forums.virtualbox.org. Retrieved 2017-03-28.
55. ^'Chapter 4. Guest Additions'. www.virtualbox.org. Retrieved 2017-03-28.
56. ^ ^ab'virtualbox.org • View topic - Reason behind the 256MB vram limit'. forums.virtualbox.org. Retrieved 2018-01-29.
57. ^'Chapter 1. First steps'.

External links[edit]

• Official website (includes documentation in HTML and PDF formats)
• RemoteBox: Open Source VirtualBox Client with Remote Management (RemoteBox is not affiliated with Oracle).