Developer(s) | Microsoft Corporation |
---|---|
Initial release | September 5, 2007 |
Final release | 5.1.50918.0 [1] (January 15, 2019 ) [±] |
Preview release | None [±] |
Operating system | Microsoft Windows, macOS, and Symbian OS [2] [3] |
Platform | IA-32 and x86-64 [4] |
Type | Application framework, run-time environment and multimedia framework |
License | Freeware |
Website | microsoft.com/silverlight |
Microsoft Silverlight is a discontinued [5] [6] application framework designed for writing and running rich internet applications, similar to Adobe's runtime, Adobe Flash. While early versions of Silverlight focused on streaming media, later versions supported multimedia, graphics, and animation, and gave support to developers for CLI languages and development tools. Silverlight was one of the two application development platforms for Windows Phone, but web pages using Silverlight did not run on the Windows Phone or Windows Mobile versions of Internet Explorer, as there was no Silverlight plugin for Internet Explorer on those platforms. [7]
Microsoft terminated support for Silverlight on Internet Explorer 11 (the last remaining web browser still supporting Silverlight) on October 12, 2021.
From the initial launch in 2007, reviewers compared the product to (since discontinued) Adobe's Flash. [8] [9]
According to statowl.com, Microsoft Silverlight had a penetration of 64.2% in May 2011. Usage in July 2010 was 53.6%, whereas as of May 2011 [update] market leader Adobe Flash was installed on 95.3% of browsers, and Java was supported on 76.5% of browsers. [10] Support of these plugins is not mutually exclusive; one system can support all three.
Silverlight was used to provide video streaming for the NBC coverage of the 2008 Summer Olympics in Beijing, [11] the 2010 Winter Olympics in Vancouver, [12] and the 2008 conventions for both major United States political parties. [13] Silverlight was also used by Amazon Video and Netflix for their instant video streaming services, [14] [15] but Netflix said in its Tech Blog in 2013 that, since Microsoft had announced Silverlight's end-of-life, they would be moving to HTML video. [16]
Industry observers announced the death of Silverlight as early as 2011. [17] Internally, even proponents of the technology thought Extensible Application Markup Language as a concept was a bad idea from the start. [18] [ disputed – discuss ]
In 2012, Microsoft deprecated Silverlight for HTML5 in Windows 8, [18] but as of the beginning of 2015, it was not clear what Microsoft's official position was on Silverlight's future. [19] In July 2015, a Microsoft blog post clarified that, "… we encourage companies that are using Silverlight for media to begin the transition to DASH/MSE/CENC/EME based designs". [6] Microsoft planned to terminate Silverlight support on October 12, 2021. [20] Support for IE7–8 was removed between 2014 and 2016, depending on the OS. [21] Support for IE9 and IE10 has also ended [21] "or though [sic] the support lifecycle of the underlying browsers, [22] whichever is shorter." [20] There is no Silverlight plugin available for Microsoft Edge. [6] [21] It has not been supported by Google Chrome since September 2015 [21] [23] or by Firefox since March 2017. [24]
Since late 2023 [update] , less than 0.02% of sites used Silverlight, [25] less than 1.3% used the also discontinued Adobe Flash Player, [26] and less than 0.03% use Java client-side (while less than 4.7% use Java server-side). [27] [28]
Silverlight provides a retained mode graphics system similar to Windows Presentation Foundation (WPF), and integrates multimedia, graphics, animations, and interactivity into a single run-time environment. In Silverlight applications, user interfaces are declared in Extensible Application Markup Language (XAML) and programmed using a subset of the .NET Framework. XAML can be used for marking up the vector graphics and animations. Silverlight can also be used to create Windows Sidebar gadgets for Windows Vista. [29]
Silverlight supports H.264 video, [30] Advanced Audio Coding, Windows Media Video (WMV), Windows Media Audio (WMA), and MPEG Layer III (MP3) media content [31] across all supported browsers without requiring Windows Media Player, the Windows Media Player ActiveX control, or Windows Media browser plug-ins. Because Windows Media Video 9 is an implementation of the Society of Motion Picture and Television Engineers (SMPTE) VC-1 standard, Silverlight also supports VC-1 video. According to the end user license agreement VC-1 and H.264 are only licensed for the "personal and non-commercial use of a consumer". [32] Silverlight makes it possible to dynamically load Extensible Markup Language (XML) content that can be manipulated through a Document Object Model (DOM) interface, a technique that is consistent with conventional Ajax techniques. Silverlight exposes a Downloader object which can be used to download content, like scripts, media assets, or other data, as may be required by the application. [33] With version 2, the programming logic can be written in any .NET language, including some nuclear evolution of common dynamic programming languages like IronRuby and IronPython. [34]
A free software implementation (now abandoned) [35] named Moonlight, developed by Novell in cooperation with Microsoft, was released to bring Silverlight version 1 and 2 functionality to Linux, FreeBSD, and other open source platforms, although some Linux distributions did not include it, citing redistribution and patent concerns. [36] However, in May 2012, Moonlight was abandoned because of its lack of popularity. [37]
Over the course of about five years, Microsoft had released five versions with varying platform support: the first version was released in 2007, and the fifth (and final) major version on May 8, 2012. It is compatible with later versions of Internet Explorer web browser on Microsoft Windows (except Windows RT) operating systems, [38] with Safari on Apple macOS, and with mobile devices using the Windows Mobile [39] and Symbian (Series 60) [40] platforms.
Cross-platform Mozilla Firefox support for Silverlight was removed in Firefox 52 released in March 2017 when Mozilla removed support for NPAPI plugins, [41] [42] bringing it in-line with the removal of NPAPI plugin support in Google Chrome. [43] [44]
Silverlight requires an x86 processor with Streaming SIMD Extensions (SSE) support. Supported processors include the Intel Pentium III and up, the AMD Athlon XP and up, and newer AMD Durons.
The following table presents an availability and compatibility matrix of Silverlight versions for various operating systems and web browsers.
This version of Silverlight is currently supported on the given platform + browser combination. |
Silverlight support on the given platform + browser combination has expired. |
No Silverlight version has ever been supported on the given platform + browser combination. |
The given platform + browser combination does not exist. |
Web browser | Internet Explorer 6 SP1 or later | Internet Explorer 7 | Internet Explorer 8 and 9 | Internet Explorer 10 | Internet Explorer 11 | Firefox | Safari | Chrome | Edge | Opera |
---|---|---|---|---|---|---|---|---|---|---|
Windows 11 | — | — | — | — | — | None, since Firefox 52 | 1, 2 | None, since Chrome 45 | None | None |
Windows 10 | — | — | — | — | 5 | None, since Firefox 52 [42] [48] | 1, 2 | None, since Chrome 45 [43] [44] | None | None [49] |
Windows 8.1 Windows Server 2012 or later | — | — | — | — | 5 | None, since Firefox 52 | 1, 2 | None, since Chrome 45 | None | None |
Windows 8 | — | — | — | 5 | — | None, since Firefox 52 | 1, 2 | None, since Chrome 45 | None | None |
Windows 7 Windows Server 2008 R2 | — | — | 1, 2, 3, 4, 5 | 5 | 5 | None, since Firefox 52 | 1, 2 | None, since Chrome 45 | None | None |
Windows Vista Windows Server 2008 | — | 1, 2, 3, 4, 5 | 1, 2, 3, 4, 5 | — | — | 1, 2, 3, 4, 5 [note 1] | 1, 2 | None, since Chrome 45 | — | None |
Windows XP Windows Server 2003 | 1, 2, 3, 4 | 1, 2, 3, 4, 5 | 1, 2, 3, 4, 5 | — | — | 1, 2, 3, 4, 5 [note 1] | 1, 2 | None, since Chrome 45 | — | None |
Windows 2000 (KB891861 required) | 2, 3, 4 | — | — | — | — | None | 2 | — | — | None |
macOS (Intel) | — | — | — | — | — | None, since Firefox 52 | None, since Safari 12 | None, since Chrome 45 | None | None |
Ubuntu Linux | — | — | — | — | — | None, since Firefox 52 | — | None, since Chrome 45 | None | None |
Support for Opera had been promised since May 3, 2007, when David Storey, the Chief Web Opener at Opera, revealed a Microsoft poster for MIX conference that had shown Opera integration as a part of Silverlight 1.1. [52] However, Opera was never officially supported by Silverlight.
On Linux and FreeBSD, the functionality was available via Moonlight and Pipelight, [53] [54] though both projects have since been discontinued. Moonlight is available for the major Linux distributions, with support for Firefox, Konqueror, and Opera browsers, provided it was obtained through Novell. [55] Miguel de Icaza has expressed an interest in working with developers from other operating systems (BSD, Solaris) and other browsers (Konqueror, WebKit and Opera) to ensure that Moonlight works fine on their systems. [56] Availability of Moonlight version 1.0 for FreeBSD was announced in March 2009, [57] but has since been reported not to actually work. [58] As of 2011 [update] , the current version of Moonlight (4 Preview 1) does not officially work on new versions of Firefox (newer than 3.x) on Linux-based operating systems. However, it can be installed in an unofficial way (for example using the Add-on Compatibility Reporter Archived May 1, 2012, at the Wayback Machine add-on) and with Firefox 11 it works correctly when installed. As noted above, the Moonlight project was abandoned in May 2012.
A browser plugin named Pipelight used to provide Silverlight access. Pipelight requires browser support for NPAPI plugins, which newer versions of Firefox, Chrome, and Opera have dropped. As of 2018, the Pipelight project has been discontinued. [59]
Silverlight was not available on Android or iOS, the most prevalent operating systems on the mobile market.
Silverlight was the primary development environment for Windows Phone (that is by now discontinued) and is based on Silverlight 4. For previous versions of Windows Mobile, the first Community Technology Preview (CTP) for Windows Mobile 6 was expected in the second quarter of 2008, but it still has not been officially announced. Microsoft has stopped focusing on bringing Silverlight to Windows Mobile 6.x. [60] Nokia announced plans to make Silverlight for Mobile available for S60 on Symbian OS, as well as for Series 40 devices and Nokia internet tablets [61] [62] (while it later sold the business to Microsoft and now sells Android tablets and will sell Alcatel-Lucent branded smartphones). Silverlight for Mobile supports Silverlight 2 content and .NET languages. [39] Silverlight for Windows Phone 7.5 is based on Silverlight 4. [63]
Silverlight applications could be written in any .NET programming language. As such, any development tools which can be used with .NET languages can work with Silverlight, provided they can target the Silverlight CoreCLR for hosting the application, instead of the .NET Framework CLR. Microsoft has positioned Microsoft Expression Blend as a companion tool to Visual Studio for the design of Silverlight User Interface applications. Visual Studio can be used to develop and debug Silverlight applications. To create Silverlight projects and let the compiler target CoreCLR, Visual Studio requires the Silverlight Tools for Visual Studio. [64]
A Silverlight control is a ZIP format file with extension .XAP containing a list of one or more .NET managed assemblies (.DLL files) along with the AppManifest.XAML file containing this list along with the entry point (class and assembly). It can be hosted in any HTML file using an object tag, for example:
<objectdata="data:application/x-silverlight-2,"type="application/x-silverlight-2"width="100%"height="100%"><paramname="source"value="MySilverLightControl.xap"/></object>
A Silverlight project contains the Silverlight.js and CreateSilverlight.js files which initializes the Silverlight plug-in for use in HTML pages, a XAML file for the UI, and code-behind files for the application code. Silverlight applications are debugged in a manner similar to ASP.NET applications. Visual Studio's CLR Remote Cross Platform Debugging feature can be used to debug Silverlight applications running on a different platform as well. [65]
In conjunction with the release of Silverlight 2, Eclipse was added as a development tool option. [66]
An April 2007 PC World report, suggested that Microsoft intended to release certain parts of Silverlight source code as open source software, [67] but a week later Sam Ramji, director of platform technology strategy at Microsoft, contradicted the rumors by confirming that the company had no plans to open Silverlight. [68] Some controls that ship with Silverlight are available under the Microsoft Public License as a part of a separate project known as the Silverlight Toolkit. [69]
At introduction, Silverlight's proprietary nature was a concern to competition due to its potential harm to the open nature of the World Wide Web. Advocates of free software were also concerned Silverlight could be another example of Microsoft's embrace, extend, and extinguish strategy. [70] Both Microsoft Silverlight and Adobe Flash are proprietary. [71] Flash's file formats are publicly documented standards, [72] [73] as are Silverlight's. [74] [75] Silverlight, like other web technologies, uses patent-encumbered audio and video codecs.
The Mono Team abandoned development of Moonlight, a free and open-source implementation of both the Silverlight 1 and 2 runtimes. [76] Development was discontinued in 2012 due to the poor acceptance of Silverlight and the restrictions imposed by Microsoft. [77]
The project had been officially supported by Microsoft which, [53] under an agreement with Novell, made not-publicly-available additional specifications, access to the Silverlight Base Class Library APIs, binary codecs and test cases available to the Mono team. [54] [78]
The "covenant" under which Novell was granted this exclusive access also specified conditions incompatible with the licensing that covers most free and open source software. As examples, it specifically required that the software must have been "obtained directly from Novell or through an Intermediate Recipient" and that it must be "not licensed under GPLv3 or a Similar License". [55] Some free software proponents criticized the covenant. [79]
Silverlight was criticized for not living up to its cross-platform operating system compatibility promises, especially on Linux systems, compared to its extensive support on Apple and Microsoft desktops for Internet Explorer, Firefox, and Chrome. Although Microsoft was officially collaborating on the Moonlight project, Bruce Chizen, CEO of Adobe Systems, which sells the competing proprietary Flash platform, questioned "the commitment of Microsoft to keep the Silverlight platform compatible with other OS besides Windows". [80] His concerns are based on "examples from history" where he said that Microsoft had launched products with promises of ongoing cross-platform compatibility that no longer apply, for example Internet Explorer for UNIX and Windows Media Player for Mac.
In 2007, California and several other U.S. states asked a district judge to extend most of Microsoft's antitrust case settlement for another five years, [81] citing "a number of concerns, including the fear that Microsoft could use the next version of Windows to 'tilt the playing field' toward Silverlight, its new Adobe Flash competitor," says a Seattle Post-Intelligencer article. The final judgment on the motion extended the settlement two years, to November 2009, but for reasons unrelated to Silverlight. [82]
Adobe Flash is a discontinued multimedia software platform used for production of animations, rich internet applications, desktop applications, mobile apps, mobile games, and embedded web browser video players.
Extensible Application Markup Language is a declarative XML-based language developed by Microsoft for initializing structured values and objects. It is available under Microsoft's Open Specification Promise.
This is a comparison of both historical and current web browsers based on developer, engine, platform(s), releases, license, and cost.
A Rich Internet Application is a web application that has many of the characteristics of desktop application software. The concept is closely related to a single-page application, and may allow the user interactive features such as drag and drop, background menu, WYSIWYG editing, etc. The concept was first introduced in 2002 by Macromedia to describe Macromedia Flash MX product. Throughout the 2000s, the term was generalized to describe browser-based applications developed with other competing browser plugin technologies including Java applets, Microsoft Silverlight.
Netscape Plugin Application Programming Interface (NPAPI) is a deprecated application programming interface (API) for web browser plugins, initially developed for Netscape Navigator 2.0 in 1995 and subsequently adopted by other browsers.
Windows Presentation Foundation (WPF) is a free and open-source user interface framework for Windows-based desktop applications. WPF applications are based in .NET, and are primarily developed using C# and XAML.
Adobe Flash Player is a discontinued computer program for viewing multimedia content, executing rich Internet applications, and streaming audio and video content created on the Adobe Flash platform. It can run from a web browser as a browser plug-in or independently on supported devices. Originally created by FutureWave under the name FutureSplash Player, it was renamed to Macromedia Flash Player after Macromedia acquired FutureWave in 1996. After Adobe acquired Macromedia in 2005, it was developed and distributed by Adobe as Adobe Flash Player. It is currently developed and distributed by Zhongcheng for users in China, and by Harman International for enterprise users outside of China, in collaboration with Adobe.
Gnash is a media player for playing SWF files. Gnash is available both as a standalone player for desktop computers and embedded devices, as well as a plugin for the browsers still supporting NPAPI. It is part of the GNU Project and is a free and open-source alternative to Adobe Flash Player. It was developed from the gameswf project.
A local shared object (LSO), commonly called a Flash cookie, is a piece of data that websites that use Adobe Flash may store on a user's computer. Local shared objects have been used by all versions of Flash Player since version 6.
Moonlight is a discontinued free and open source implementation for Linux and other Unix-based operating systems of the Microsoft Silverlight application framework, developed and then abandoned by the Mono Project. Like Silverlight, Moonlight was a web application framework which provided capabilities similar to those of Adobe Flash, integrating multimedia, graphics, animations and interactivity into a single runtime environment.
A site-specific browser (SSB) is a software application that is dedicated to accessing pages from a single source (site) on a computer network such as the Internet or a private intranet. SSBs typically simplify the more complex functions of a web browser by excluding the menus, toolbars and browser GUI associated with functions that are external to the workings of a single site. These applications are typically started by a desktop icon which is usually a favicon.
Google Chrome is a web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS, iOS, iPadOS, and also for Android, where it is the default browser. The browser is also the main component of ChromeOS, where it serves as the platform for web applications.
Google Native Client (NaCl) is a discontinued sandboxing technology for running either a subset of Intel x86, ARM, or MIPS native code, or a portable executable, in a sandbox. It allows safely running native code from a web browser, independent of the user operating system, allowing web apps to run at near-native speeds, which aligns with Google's plans for ChromeOS. It may also be used for securing browser plugins, and parts of other applications or full applications such as ZeroVM.
HTML video is a subject of the HTML specification as the standard way of playing video via the web. Introduced in HTML5, it is designed to partially replace the object element and the previous de facto standard of using the proprietary Adobe Flash plugin, though early adoption was hampered by lack of agreement as to which video coding formats and audio coding formats should be supported in web browsers. As of 2020, HTML video is the only widely supported video playback technology in modern browsers, with the Flash plugin being phased out.
Modern HTML5 has feature-parity with the now-obsolete Adobe Flash. Both include features for playing audio and video within web pages. Flash was specifically built to integrate vector graphics and light games in a web page, features that HTML5 also supports.
Internet Explorer 10 (IE10) is the tenth, and by now, discontinued, version of the Internet Explorer web browser and the successor to Internet Explorer 9, released by Microsoft on September 4, 2012. It is the default browser on Windows 8 and Windows Server 2012, and was later made available for Windows 7 and Windows Server 2008 R2. It does not support Windows Vista, Windows Server 2008, or earlier versions.
Mono is a free and open-source software framework that aims to run software made for the .NET Framework on Linux and other OSes. Originally by Ximian which was acquired by Novell, it was later developed by Xamarin which was acquired by Microsoft. In August 2024, Microsoft transferred ownership of Mono to WineHQ.
Adobe Shockwave Player was a freeware software plug-in for viewing multimedia and video games created on the Adobe Shockwave platform in web pages. Content was developed with Adobe Director and published on the Internet. Such content could be viewed in a web browser on any computer with the Shockwave Player plug-in installed. It was first developed by Macromedia and released in 1995; it was later acquired by Adobe Systems in 2005.
Encrypted Media Extensions (EME) is a W3C specification for providing a communication channel between web browsers and the Content Decryption Module (CDM) software which implements digital rights management (DRM). This allows the use of HTML video to play back DRM-wrapped content such as streaming video services without the use of heavy third-party media plugins like Adobe Flash or Microsoft Silverlight. The use of a third-party key management system may be required, depending on whether the publisher chooses to scramble the keys.
Pipelight is a compatibility layer that allows NPAPI plugins designed for Windows to run on Linux. It is based on a modified version of Wine. It currently supports Silverlight, Flash Player, Unity 3D, and Widevine. There is experimental support for additional plugins such as Shockwave Player. Pipelight requires that the browser support NPAPI plugins, which some browsers don't support. Firefox dropped NPAPI support in version 52.
we encourage companies that are using Silverlight for media to begin the transition to DASH/MSE/CENC/EME based designs
Beginning January 12, 2016, only the most current version of Internet Explorer available for a supported operating system receives technical support and security updates
{{cite web}}
: CS1 maint: bot: original URL status unknown (link)"Downstream Recipient" means an entity or individual that uses for its intended purpose a Moonlight Implementation obtained directly from Novell or through an Intermediate Recipient… Microsoft reserves the right to update (including discontinue) the foregoing covenant… "Moonlight Implementation" means only those specific portions of Moonlight 1.0 or Moonlight 1.1 that run only as a plug-in to a browser on a Personal Computer and are not licensed under GPLv3 or a Similar License.
We will be supporting Firefox and Linux initially (that is our first goal) but we are looking forward to work with developers from other operating systems (BSD, Solaris) and other browsers (Konqueror, WebKit and Opera) to ensure that Moonlight works fine on their systems.
Version 1.0; Applies To: Windows® Phone 7
Silverlight for Windows Phone OS 7.1 is based on Silverlight 4. That means if you create a new Silverlight for Windows Phone application that targets Windows Phone OS 7.1, you can take advantage of several new features.
Others take a darker view of Microsoft's intentions and argue that Silverlight is simply a rehash of the company's 1990s-era "embrace and extend" strategy for pre-empting Web competition. "They're still playing the same games," said Michael Nelson, professor of internet studies at Georgetown University. "It's a way to lock up the content, and it's not enabling as much innovation as we would like to see."
Companies building websites should beware of proprietary rich-media technologies like Adobe's Flash and Microsoft's Silverlight, the founder of Mozilla Europe has warned.
Moonlight is safe from threat only if you get it from Novell AND DO NOT PASS IT ON, as there are no protections for downstream recipients...Unless those downstream recipients get it from an 'Intermediate Recipient' defined to only include authorized resellers...It's like walking into a store and saying "I'm only going to pay half of the amount I owe and I hereby disclaim my duty to pay full price." You can try that, but the law supersedes whatever intent or desire you've expressed. At minimum, this shows how clearly they DO NOT want to coexist with GPL'd code.