Microsoft and open source: Difference between revisions

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| image1 = FsharpFSharp logoLogo.png

| caption1 = [[F Sharp Software Foundation|F# Software Foundation]]

| image2 = .NET Foundation Logo.svg

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| caption4 = [[GitHub]]

| image5 = Ms loves linux.png

| caption5 = "Microsoft (loves) Linux", image from the [https://www.microsoft.com/en-us/windows-server/blog/2015/05/06/microsoft-loves-linux/|Microsoft official blog in 2015].

| alt5 = "Microsoft (loves) Linux"

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[[Microsoft]], a technologytech company historically known for its opposition to the [[open source software]] paradigm, turned to embrace the approach in the 2010s. From the 1970s through 2000s under CEOs [[Bill Gates]] and [[Steve Ballmer]], Microsoft viewed the community creation and sharing of communal code, later to be known as free and open source software, as a threat to its business, and both executives spoke negatively against it. In the 2010s, as the industry turned towards [[cloud computing|cloud]], [[embedded computing|embedded]], and [[mobile computing]]—technologies powered by open source advances—CEO [[Satya Nadella]] led Microsoft towards open source adoption although Microsoft's traditional Windows business continued to grow throughout this period generating revenues of 26.8 billion in the third quarter of 2018, while Microsoft's [[Microsoft Azure|Azure]] cloud revenues nearly doubled.<ref>{{Cite web|url=https://arstechnica.com/gadgets/2018/04/even-windows-revenue-is-up-in-microsofts-26-8-billion-3q18/|title=Even Windows revenue is up in Microsoft's $26.8 billion 3Q18|last=Bright|first=Peter|date=2018-04-26|website=Ars Technica|language=en-us|access-date=2019-12-18}}</ref>

Microsoft open sourced some of its code, including the [[.NET Framework]], and made investments in Linux development, server technology, and organizations, including the [[Linux Foundation]] and [[Open Source Initiative]]. [[Linux]]-based operating systems power the company's [[Microsoft Azure|Azure cloud services]]. Microsoft acquired [[GitHub]], the largest host for open source project infrastructure, in 2018. Microsoft is among the site's most active contributors. While this acquisition led a few projects to migrate away from GitHub,<ref>{{Cite web |title=GitHub rivals gain from Microsoft acquisition but it's no mass exodus, yet |work=[[ZDNet]] |date=2019-05-06 |url=https://www.zdnet.com/article/github-rivals-gain-from-microsoft-acquisition-but-its-no-mass-exodus-yet/ }}</ref> this proved a short-lived phenomenon as by 2019 there were over 10 million new users of [[GitHub]].{{citation needed|date=March 2020}}

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==== 2000s ====

In April 2004, [[WiX|Windows Installer XML]] (WiX) was the first [[Microsoft]] project to be released under an open-source license, the [[Common Public License]]. Initially hosted on [[SourceForge]], it was also the first Microsoft project to be hosted externally.

it was also the first Microsoft project to be hosted externally.

In June 2004, for the first time Microsoft was represented with a booth at [[LinuxTag]], a free software [[computer expo|exposition]], held annually in [[Germany]].<ref>[http://www.linuxtag.org/2004/exhibitorlist.html LinuxTag 2004 Ausstellerliste]</ref> LinuxTag claims to be Europe's largest exhibition for open source software.

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{{blockquote|Microsoft's approach to open today is: Enable, integrate, release, and contribute.|[[Mark Russinovich]], CTO of [[Microsoft Azure]]<ref>{{Cite web|url=https://www.zdnet.com/article/mark-russinovich-the-microsoft-azure-cloud-and-open-source/|title=Microsoft's Mark Russinovich to Linux faithful: Send us your resumes|first=Steven J.|last=Vaughan-Nichols|website=ZDNet}}</ref>}}

In August 2015, Microsoft released [[WinObjC]], also known as Windows Bridge for iOS, an open-source [[middleware]] toolkit that allows [[iOS]] apps developed in [[Objective-C]] to be ported to Windows 10.<ref>{{cite web|url=http://www.pcworld.com/article/2960526/software-development/microsoft-releases-ios-to-windows-app-maker-windows-bridge-to-open-source.html|title=Microsoft releases iOS-to-Windows app maker Windows Bridge to open source|last=Hachman|first=Mark|website=[[PC World]]|publisher=IDG|date=August 6, 2015|access-date=October 9, 2015}}</ref><ref>{{cite web|url=http://www.anandtech.com/show/9205/microsoft-demonstrates-android-and-ios-applications-running-on-windows-10|archive-url=https://web.archive.org/web/20150501095343/http://www.anandtech.com/show/9205/microsoft-demonstrates-android-and-ios-applications-running-on-windows-10|url-status=dead|archive-date=May 1, 2015|title=Microsoft Demonstrates Android and iOS Applications Running On Windows 10|last=Chester|first=Brandon|website=[[Anandtech]]|publisher=Purch Inc.|date=April 29, 2015|access-date=October 9, 2015}}</ref><ref>{{cite web|url=https://venturebeat.com/2015/05/01/everything-you-need-to-know-about-porting-android-and-ios-apps-to-windows-10/|title=Everything you need to know about porting Android and iOS apps to Windows 10|last=Protalinski|first=Emil|website=[[VentureBeat]]|date=May 1, 2015|access-date=October 9, 2015}}</ref> On November 18, 2015, [[Visual Studio Code]] was released under the proprietary Microsoft License and a subset of its source code was posted to [[GitHub]] under the [[Expat License|MIT License]].<ref>{{cite news|title=Visual Studio now supports debugging Linux apps; Code editor now open source|url=https://arstechnica.com/information-technology/2015/11/visual-studio-now-supports-debugging-linux-apps-code-editor-now-open-source/|access-date=18 November 2015|work=Ars Technica}}</ref>

[[File:Number of open source contributors by company.png|thumb|The ten organizations with the most open-source contributors on GitHub in 2016<ref>{{Cite web|url=https://octoverse.github.com/|title=The state of the Octoverse 2016|archive-url=https://web.archive.org/web/20170405182156/https://octoverse.github.com/|archive-date=April 5, 2017}}</ref>]]

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In August 2022, Microsoft open sourced more than 1,500 of its 3D [[emoji]] to let creators remix and customize them. The library is available on [[Figma (software)|Figma]] and GitHub.<ref>{{cite web|url=https://www.theverge.com/2022/8/10/23299527/microsoft-emoji-open-source-creators|title=Microsoft open sources its 3D emoji to let creators remix and customize them|last=Warren|first=Tom|date=10 August 2022|website=[[The Verge]]|access-date=14 August 2022}}</ref>

On May 18, 2025, Microsoft released [[Microsoft Edit]], an open-source recreation of the [[MS-DOS Editor]] written in the [[Rust (programming language)|Rust programming language]] for modern versions of Windows.<ref>{{cite web|url=https://www.theverge.com/news/669318/microsoft-edit-on-windows-command-line-text-editor|title=Microsoft’s Edit on Windows is a new command-line text editor|work=[[The Verge]]|date=19 May 2025|access-date=21 May 2025|author-last=Warren|author-first=Tom}}</ref>

== Support of open source organizations ==

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* CodePlex Foundation, later known as [[Outercurve Foundation]]<ref name="boxofcables.dev" />

* [[Confidential Computing Consortium]]<ref>{{Cite web|url=https://confidentialcomputing.io/members/|title=Members}}</ref>

* [[eBPF Foundation]]<ref>{{Cite web|url=https://ebpf.io/members/|title=eBPF Members}}</ref>

* [[Eclipse Adoptium Working Group]]<ref>{{Cite web|url=https://www.microsoft.com/openjdk|title=Microsoft Build of OpenJDK|website=[[Microsoft]]}}</ref>

* [[Eclipse Foundation]]<ref>{{Cite web|url=https://www.eclipse.org/membership/exploreMembership.php#tab-contributing|title=Explore Our Members &#124; The Eclipse Foundation|first=Christopher|last=Guindon|website=www.eclipse.org}}</ref>

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* [[AirSim]] – Simulator for drones, cars and other objects, built as a platform for [[AI]] research

* [[Allegiance (video game)|''Allegiance'']] – [[Multiplayer video game|Multiplayer]] [[online game]] providing a mix of [[real-time strategy]] and player piloted [[Space combat simulator|space combat]] gameplay

* [[ASP.NET]] – It is a web application framework developed for building dynamic web applications and services.

* [[ASP.NET]]

* [[ASP.NET AJAX]] – It is a set of extensions for ASP.NET that enables developers to create asynchronous, interactive web applications.

* [[ASP.NET AJAX]]

* [[ASP.NET Core]] – It is an open-source, cross-platform framework developed for building modern web applications and services.

* [[ASP.NET Core]]

* [[ASP.NET MVC]] – It is a web application framework which follows the Model-View-Controller (MVC) architectural pattern.

* [[ASP.NET MVC]]

* [[ASP.NET Razor]] – It is a markup syntax used in ASP.NET for creating web pages.

* [[ASP.NET Web Forms|ASP.NET Web Forms –]] It is a web application framework that allows developers to build dynamic websites by utilizing a component-based approach.

* [[ASP.NET Web Forms]]

[[File:Atom screenshot v1.41.0.png|thumb|[[Atom (text editor)|Atom]] [[text editor|text]] and [[source code editor]] with an open project on [[Windows 10]]]]

* [[Atom (text editor)|Atom]] – [[text editor|Text]] and [[source code editor]] for [[macOS]], [[Linux]], and [[Microsoft Windows]]

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* [[GW-BASIC]] – Dialect of the [[BASIC]] [[programming language]]

* [[Microsoft C++ Standard Library]] – Implementation of the [[C++ Standard Library]] (also known as the STL)<ref>{{Cite web|url=https://devblogs.microsoft.com/cppblog/open-sourcing-msvcs-stl/|title=Open Sourcing MSVC's STL|date=September 16, 2019|website=C++ Team Blog}}</ref>

* [[Microsoft Edit]] – [[Text-based user interface|TUI]] [[text editor]]

[[File:Monodevelop5.4.png|thumb|[[MonoDevelop]] [[integrated development environment|IDE]] for [[Linux]], [[macOS]], and [[Windows]]]]

* [[Mixed Reality Toolkit]] – Software development kit (SDK) for the development of [[mixed reality]] (MR) and [[augmented reality]] (AR) software applications

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* [[Windows Package Manager]] – [[Package manager]] for Windows 10

* [[Windows Presentation Foundation]] – Graphical subsystem (similar to [[WinForms]]) for rendering [[user interface]]s in Windows-based applications

* [[Windows Subsystem for Linux]] – Windows component that allows a GNU/Linux environment to be used from within Windows.

* [[Windows Template Library]] – [[Object-oriented programming|Object-oriented]] [[C++]] template [[Library (computing)|library]] for [[Win32]] development

* [[Windows UI Library]] – Set of [[UI control]]s and features for the [[Universal Windows Platform]] (UWP)