Virtual PC

	VirtualBox for Windows. Within VirtualBox Ubuntu 10.10 is running.
	VirtualBox for Mac OS X. Within VirtualBox Windows 7 is running.
	VirtualBox for Linux/UNIX. Within VirtualBox Windows XP is running.

VirtualBox binaries

By downloading, you agree to the terms and conditions of the respective license.

• VirtualBox platform packages. The binaries are released under the terms of the GPL version 2.
  • VirtualBox 4.0.10 for Windows hosts x86/amd64
  • VirtualBox 4.0.10 for OS X hosts x86/amd64
  • VirtualBox 4.0.10 for Linux hosts
  • VirtualBox 4.0.10 for Solaris hosts x86/amd64

• VirtualBox 4.0.10 Oracle VM VirtualBox Extension Pack All platforms
  Support for USB 2.0 devices, VirtualBox RDP and PXE boot for Intel cards. See this chapter from the User Manual for an introduction to this Extension Pack. The Extension Pack binaries are released under the VirtualBox Personal Use and Evaluation License (PUEL).

• VirtualBox 4.0.10 Software Developer Kit (SDK) All platforms

See the changelog for what has changed.
You might want to compare the

• SHA256 checksums or the
• MD5 checksums

to verify the integrity of downloaded packages.
Note: After upgrading VirtualBox it is recommended to upgrade the guest additions as well.

User Manual

The VirtualBox User Manual is included in the VirtualBox binaries above. If, however, you would like to take a look at it without having to install the whole thing, you also access it here:

• User Manual (HTML version)

You may also like to take a look at our frequently asked questions list.

VirtualBox older builds

The binaries in this section are all released under the VirtualBox Personal Use and Evaluation License (PUEL). By downloading, you agree to the terms and conditions of that license.

• VirtualBox older builds

VirtualBox Sources

The VirtualBox sources are available free of charge under the terms and conditions of theGNU General Public License, Version 2. By downloading from the below links, you agree to these terms and conditions.

• Source code

• Browse the source code repository

This is the current development code, which is not necessarily stable.

• View the latest source code changes

• Download the VirtualBox OSE about logo in higher resolutions: 1024x768, 1600x1200.

• Checking out from our Subversion server.

  svn co http://www.virtualbox.org/svn/vbox/trunk vbox
  

  This is the current development code, which is not necessarily stable.
  
  Note: The repository was recently moved. If svn update aborts with an error message regarding a moved repository, then do

  svn switch --relocate \
     http://virtualbox.org/svn/vbox/trunk \
     http://www.virtualbox.org/svn/vbox/trunk
  

After getting the sources in one of the ways listed above, you should have a look at thebuild instructions.
Please also take a look at our licensing FAQ, in particular regarding the use of the name VirtualBox.
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7Zip Freeware For Compress Files and Folders

Most of computer users using ZIP and WinRaR software for compress files and folders on computer. These both software’s are awesome and working fantastic. But problem is that both are not freeware you we can’t use all features of these till we not buy it. So we can use 7-Zip is open source softwareand most of the source code is under the GNU LGPL license. It is completely freeware can you can most of features like paid compression software. It is best Winzip and Winrar alternative for compression file and folders. It is very easy to use and extract most of formats. Best in all you can use this application on all Windows version.

Features of 7Zip are:

• High compression ratio in new 7z format with LZMA compression
• Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
• Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.
• ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
• Strong AES-256 encryption in 7z and ZIP formats
• Self-extracting capability for 7z format
• Powerful File Manager
• Powerful command line version
• Plugin for FAR Manager
• Localizations for 79 languages

Compression ratio We compared 7-Zip with some of the leading archivers. FILE SETS: Mozilla Firefox 1.0.7 for Windows and Google Earth 3.0.0616 for Windows after full installation. Archiver Mozilla Firefox Google Earth 161 files 15,684,168 bytes 115 files 23,530,652 bytes Compressed size Ratio Compressed size Ratio 7-Zip 4.23 (7z format) 4621135 100% 6109183 100% WinRAR 3.50 5021556 109% 6824892 112% CABARC 5.1 5131393 111% 7434325 122% WinZip 10.0 beta (maximum-PPMd) 5277118 114% 8200708 134% 7-Zip 4.23 (zip format) 6222627 135% 8909446 146% WinZip 10.0 beta (maximum-portable) 6448666 140% 9153898 150% Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs. Download 7-Zip 9.20 (2010-11-18) for Windows: Link Type Windows Size Download .exe 32-bit x86 1 MB Download .msi 64-bit x64 1 MB

7-Zip 9.22 beta 2011-04-18 7-Zip 9.22 beta links