Open source software for windows 10 64-bit

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News Flash

  • New

    November 18th, 2022
    VirtualBox 7.0.4 released!

    Oracle today released a 7.0 maintenance release which improves stability and fixes regressions. See theChangelog for details.

  • New

    October 20th, 2022
    VirtualBox 7.0.2 released!

    Oracle today released a 7.0 maintenance release which improves stability and fixes regressions. See theChangelog for details.

  • New

    October 11th, 2022
    VirtualBox 6.1.40 released!

    Oracle today released a 6.1 maintenance release which improves stability and fixes regressions. See theChangelog for details.

  • New

    October 10th, 2022
    VirtualBox 7.0.0 released!

    Oracle today released a significant new version of OracleVM VirtualBox, its high performance, cross-platform virtualization software.Changelog for details.

  • New

    September 2nd, 2022
    VirtualBox 6.1.38 released!

    Oracle today released a 6.1 maintenance release which improves stability and fixes regressions. See theChangelog for details.

  • Important

    August 30th, 2022
    We’re hiring!

    Looking for a new challenge? We’re hiring a VirtualBox Principal Software Developer (US, UK, Romania).

  • New

    July 19th, 2022
    VirtualBox 6.1.36 released!

    Oracle today released a 6.1 maintenance release which improves stability and fixes regressions. See theChangelog for details.

More information…

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 3. See “About VirtualBox” for an introduction.

Presently, VirtualBox runs on Windows, Linux, macOS, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7, Windows 8, Windows 10), DOS/Windows 3.x, Linux (2.4, 2.6, 3.x and 4.x), Solaris and OpenSolaris, OS/2, and OpenBSD.

VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria.


Hot picks:

  • Pre-built virtual machines for developers at


    Oracle Tech Network

  • Hyperbox Open-source Virtual Infrastructure Manager


    project site

  • phpVirtualBox AJAX web interface


    project site

Portable software for cloud, local, and portable USB drives is the world’s most popular portable software solution allowing you to take your favorite Windows software with you. It works in any cloud drive folder (Dropbox, Google Drive, OneDrive, etc), on any portable storage device (USB flash drive, memory card, portable hard drive, etc), or from your local hard drive. With millions of users all over the world and a full collection of open source and freeware software (as well commercial software), is the most complete solution for life on the was founded by John T. Haller, whose Portable Firefox started the portable software trend. We’ve been making software portable since March 2004. Today, our team stands at over 200 developers, translators, application packagers, designers, and release testers with nearly a billion app downloads. Our goal is to centralize the knowledge and development of portable software and build an open platform that any software or hardware developer can use


7-Zip is a file archiver with a high compression ratio.

Download 7-Zip 22.01 (2022-07-15) for Windows:

Link Type Windows Size Download .exe 64-bit x64 1.5 MB Download .exe 32-bit x86 1.2 MB Download .exe 64-bit ARM64 1.5 MB


7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code. Read 7-Zip License information.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don’t need to register or pay for 7-Zip.

The main features of 7-Zip

  • High compression ratio in 7z format with LZMA and LZMA2 compression
  • Supported formats:
    • Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
  • For 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
  • Integration with Windows Shell
  • Powerful File Manager
  • Powerful command line version
  • Plugin for FAR Manager
  • Localizations for 87 languages

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2019 / 2016 / 2012 / 2008 / 2003 / 2000.

p7zip – the port of the command line version of 7-Zip to Linux/Posix.

On 7-Zip’s SourceForge Page you can find a forum, bug reports, and feature request systems.

Compression ratio

We compared 7-Zip with WinRAR 5.20.

FILE SETS: Mozilla Firefox 34.0.5 for Windows and Google Earth for Windows.

Archiver Mozilla Firefox Google Earth 65 files
85 280 391 bytes 483 files
110 700 519 bytes Compressed size Ratio Compressed size Ratio 7-Zip 9.35
39 357 375 100% 15 964 369 100% WinRAR 5.20
-m5 -s -ma5 -md128m 41 789 543 106% 17 035 432 107%

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.

Many individuals and organizations are supporting the development of Stellarium by donations, and the most generous financial contributors (with donations of $250 or more) are Laurence Holt, Jeff Moe (Spacecruft), Astronomie-Werkstatt “Sterne ohne Grenzen”, John Bellora, Vernon Hermsen, Triplebyte, Marla Pinaire, Satish Mallesh, Vlad Magdalin.


You can learn more about Stellarium, get support and help the project from these links:


If the Stellarium planetarium was helpful for your research work, the following acknowledgment would be appreciated:

This research has made use of the Stellarium planetarium

Zotti, G., Hoffmann, S. M., Wolf, A., Chéreau, F., & Chéreau, G. (2021). The Simulated Sky: Stellarium for Cultural Astronomy Research. Journal of Skyscape Archaeology, 6(2), 221–258.

Or you may download the BibTeX file of the paper to create another citation format.


The latest development snapshot of Stellarium is kept on github. If you want to compile development versions of Stellarium, this is the place to get the source code.

supporters and friends

Stellarium is produced by the efforts of the developer team, with the help and support of the following people and organisations .

The OpenVPN community project team is proud to release OpenVPN 2.5.4. This release include a number of fixes and small improvements. One of the fixes is to password prompting on windows console when stderr redirection is in use – this breaks 2.5.x on Win11/ARM, and might also break on Win11/amd64. Windows executable and libraries are now built natively on Windows using MSVC, not cross-compiled on Linux as with earlier 2.5 releases. Windows installers include updated OpenSSL and new OpenVPN GUI. The latter includes several improvements, the most important of which is the ability to import profiles from URLs where available. Installer version I602 fixes loading of pkcs11 files on Windows. Installer version I603 fixes a bug in the version number as seen by Windows (was 2.5..4, not 2.5.4). Installer I604 fixes some small Windows issues.

Overview of changes since OpenVPN 2.4

Faster connections

  • Connections setup is now much faster

Crypto specific changes

  • ChaCha20-Poly1305 cipher in the OpenVPN data channel (Requires OpenSSL 1.1.0 or newer)

  • I


    TLS 1.3 support when using OpenSSL 1.1.1 or newer

  • Client-specific tls-crypt keys (–tls-crypt-v2)

  • Improved Data channel cipher negotiation

  • Removal of BF-CBC support in default configuration (see below for possible incompatibilities)

Server-side improvements

  • HMAC based auth-token support for seamless reconnects to standalone servers or a group of servers.

  • Asynchronous (deferred) authentication support for auth-pam plugin

  • Asynchronou

    s (d


    ) support for


    scripts and plugins

Network-related changes

  • Support IPv4 configs with /31 netmasks now

  • 802.1q VLAN support on TAP servers

  • IPv6-only tunnels

  • New option –block-ipv6 to reject all IPv6 packets (ICMPv6)

Linux-specific features

  • VRF support

  • Netlink integration (OpenVPN no longer needs to execute ifconfig


    or ip commands)

Windows-specific features

  • Wintun driver support, a faster alternative to tap-windows6

  • Setting tun/tap interface MTU

  • Setting DHCP search domain

  • Allow unicode search string in –cryptoapicert option

  • EasyRSA3 , a modern take on OpenVPN CA management
  • MSI installer

Important notices

BF-CBC cipher is no longer the default

Cipher handling for the data channel cipher has been significantly changed between


2.3/2.4 and


2.5, most notably




no “default cipher BF-CBC” anymore because it is no longer considered a reasonable default.

BF-CBC is still available, but it needs to be explicitly configured now.

For connections between OpenVPN

2.4 and


2.5 clients and servers, both ends will be able  to negotiate a better cipher than BF-CBC. By default they will select one of the AES-GCM ciphers, but this can be influenced using the –data-ciphers setting.

Connections between OpenVPN

2.3 and


2.5 that have no –cipher setting in the config (= defaulting to BF-CBC and not being negotiation-capable) must be updated.





included in –data-ciphers

or there is a “–cipher BF-CBC”

in the


2.5 config, a


2.5 client or server will refuse to talk to a


2.3 server or client, because it has no common data channel cipher and negotiating a cipher is not possible.

Generally, we recommend upgrading such setups to OpenVPN

2.4 or



If upgrading is not possible we recommend adding data-ciphers AES-256-GCM:AES-128-GCM:AES-128-CBC (for v

2.5+) or cipher AES-128-CBC (


2.4.x and older) to the configuration of all clients and servers.


f you


need to



n unsupported


2.3 (or even older)


and need to stay on BF-CBC

(not recommended)

, the

OpenVPN 2.5 based client will need

a config file change to re-enable BF-CBC

.  But be warned that BF-CBC and other related weak ciphers will be removed in coming OpenVPN major releases.

For full details see the” Data channel cipher negotiation ” section on the man page


Connectivity to some VPN service provider may break

Connecting with an OpenVPN 2.5 client to at least one commercial VPN service that

implemented their own cipher negotiation method that always reports back that it is using BF-CBC to the client is broken in v2.5. This has always caused warning about mismatch ciphers. We have been in contact with some


providers and they are looking into it.  This is not something the OpenVPN community can fix.

  If your commercial VPN does not work with a


2.5 client, complain to the VPN service provider.

More details on these new features as well as a list of deprecated features and user-visible changes are available in Changes.rst

Written by Jane