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Software widget

cpu monitoring software widget windows 10, software widget
A software widget is a relatively simple and easy-to-use software application or component made for one or more different software platforms

A desk accessory or applet is an example of a simple, stand-alone user interface, in contrast with a more complex application such as a spreadsheet or word processor These widgets are typical examples of transient and auxiliary applications that don't monopolize the user's attention

On the other hand, graphical control elements GUI "widgets" are examples of reusable modular components that are used together to build a more complex application, allowing programmers to build user interfaces by combining simple, smaller parts


  • 1 Classification
    • 11 Primary types
    • 12 Types of web widgets
    • 13 Types of GUI widgets
  • 2 Widget Engine
  • 3 Types
    • 31 GUI widgets
    • 32 Desktop widgets
    • 33 Widget draft standard
    • 34 Mobile widgets
    • 35 Web widgets
    • 36 TV set widgets
  • 4 Information flow of desktop widgets
  • 5 References
  • 6 See also


Because the term, and the coding practice, has been extant since at least the 1980s, it has been applied in a number of contexts1

Primary typesedit

A Graphical control element GUI widget is part of a graphical user interface GUI that allows a computer user to control and change the appearance of elements for operating a software application In this context a widget may refer to a generic GUI element such as a check box, to an instance of that element, or to a customized collection of such elements used for a specific function or application such as a dialog box for users to customize their computer screen appearances A Widget toolkit is a set of programming tools that help developers reuse GUI widgets to build a user interface

A desktop widget is a specialized GUI widget intended to run on a computer desktop for computer users to control simple utility functions such as clocks, messaging services, and calendars A mobile widget is the comparable equivalent for mobile devices ie smart phones

A web widget is a portable application installed and executed, typically by non-expert webmasters on HTML-based web pages, to offer site visitors shopping, advertisements, videos, or other simple functionality from third party widget publishers

Types of web widgetsedit

  • A "widget application" is a third party web widget developed for an online social network platform, with the user interface or the entire application hosted by the network service Social network companies such as Facebook and Myspace host these applications and provide them underlying platform services such as display and storage of user-provided photos and other content, profile information about end users and communications features with other users through special-purpose application programming interfaces234 The term is used fairly loosely, in that many such applications are more complex internally and in operation than the simple applets that are called "widgets" in other contexts The relationship between platform and developer is mutually beneficial, with the social network offering hardware and software infrastructure, and access to the social network's end user base, and with application publishers ranging from amateur developers to organized companies such as RockYou! and slidecom providing content and features that make the social network services more useful for their members At present, there is no fee or payment between developers and social network platforms, and attempts to realize revenue from widgets primarily advertising by the widget applications and sale of electronic commerce goods and services within the widgets have been relatively unsuccessful

Types of GUI widgetsedit

  • Disclosure widgets are specific types of GUI widgets that may be hidden or expanded by computer users
  • A metawidget is a GUI widget for controlling the operation of other widgets within a GUI5

Widget Engineedit

Example of placement of widgets in case of a Linux-based architecture See the location of Ubuntu Unity widgets, KDE Plasma widgets and Desktop widgets at the top layer

A widget engine is the software platform on which desktop or web engines run The widget model in widget engines is attractive because of ease of development Most of these widgets can be created with a few images and about 10 to several hundred lines of XML/JavaScript/VBScript source code A single host software system, such as a web browser, runs all the loaded widgets This allows several desktop widgets to be built sharing resources and code

The term widget engine is not to be confused with that of a widget toolkit Toolkits are used by GUI programmers, who combine several widgets reusable components to form a single application A widget in a toolkit provides a single, low level interaction, and is prepared to communicate with other widgets in the toolkit On the other hand, widget engines such as desktop widgets and web widgets are intended for end users Desktop and web widgets are stand-alone, task-oriented applications which can be composed of several related interactions on its own


GUI widgetsedit

Main article: Graphical control element

A graphical control element often called GUI widget represents a part of a graphical user interface GUI which the user can use to interact with the program to which the GUI belongs to Graphical control elements are implemented like subroutines Widget toolkits and software frameworks, like eg GTK+ or Qt, contain them in software libraries so that programmers can use them to build GUIs for their programs

Graphical user interface builders, such as eg Glade Interface Designer, facilitate the authoring of GUIs

Desktop widgetsedit

The Wikipedia Widget, in Dashboard running under Mac OS X v104 Early developer version of Plasma Desktop with Plasmoids

Desktop widgets commonly just called widgets are interactive virtual tools that provide single-purpose services such as showing the user the latest news, the current weather, the time, a calendar, a dictionary, a map program, a calculator, desktop notes, photo viewers, or even a language translator, among other things Widgets can provide or augment the graphical shell Examples of widget engines include:

  • Dashboard widgets of Apple Macintosh
  • Microsoft gadgets in Windows Vista, Windows 7, and in the Windows Live system - No longer supported, use now discouraged by Microsoft
  • Plasmoids are widgets in Plasma, the default graphical shell since KDE SC 4 - Active and under development
  • Google Desktop running Google Gadgets - No longer supported, discontinued, some security issues re: data sharing
  • GNOME Shell, the graphical shell of GNOME 3 provides a widget engine
  • Yahoo! Widgets for Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Mac OSX - No longer supported by Yahoo but still functioning on Windows, Since Mac OSX 1011 El Kapitan the Yahoo widget engine no longer functions on OSX
  • XWidgets - for Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 and Android - Last updated in: 2 March 2015 Windows
  • Kludgets - for Windows - Allows Mac dashboard widgets to operate on Windows Open Source, not actively developed
  • gdesklets, adesklets , and Screenlets in Linux, all open source, all appear to be dead projects
  • Opera Widgets on all platforms desktop, mobile TVs, gaming consoles using the Opera browser's rendering engine Opera Widgets were discontinued since the version 12 of the browser6
  • Homescreen widgets in Maemo
  • Homescreen widgets in Android

Originally, desk accessories were developed to provide a small degree of multitasking in operating systems that could only held one main application at a time, but when real multitasking OSes became available, these were replaced by normal applications

Widget draft standardedit

On 9 November 2006, the Web Application Formats Working Group in W3C released the first public working draft of Widgets 107 The intention is to standardise some aspects of widgets The Opera browser is the first client side widget engine to adopt this draft W3C standard8 Apache Wookie Incubating is the first server side widget engine to adopt this W3C standard Wookie is a server that manages widget instances and allows them to be embedded in web applications in addition to being provided for client devices such as Opera

Mobile widgetsedit

Most mobile widgets are like desktop widgets, but for a mobile phone Mobile widgets can maximize screen space use and may be especially useful in placing live data-rich applications on the device idle-screen/home-screen/"phone-top" Several Java ME-based mobile widget engines exist, but the lack of standards-based APIs for Java to control the mobile device home-screen makes it harder for these engines to expose widgets on the phone-top

Several AJAX-based native widget platforms are also available for mobile devices

The growing pervasiveness of mobile widgets is easily understood While widgets are a convenience in the online world, they can be looked at as near-essential in the mobile world The reason: the mobile device is small and the interface is often challenging Wading through large amounts of information in a mobile environment is not just a nuisance; it is a near impossibility

One of the biggest challenges of widget development is writing multiple sets of computer code so that a widget will be compatible with multiple operating systems and types of devices

Companies considering new mobile widgets should evaluate and then deploy applications according to four criteria: the business model, distribution model, server-side application framework and the run-time environment

Many solutions are growing for mobile widgets Among them the BONDI initiative within OMTP is trying to defragment these solution allowing the same widget to be run on different mobile phones allowing secure access to mobile phone capabilities

Android, of all mobile operating systems, has supported mobile widgets natively since April 30, 2009

Some of the most popular widgets on the Android operating system include DashClock, Google Keep and HD Widgets9

Web widgetsedit

Main article: Web widget

Web browsers can also be used as widget engine infrastructures The web is an environment well suited to distribution of widgets, as it doesn't require explicit interaction from the user to install new code snippets

Web widgets have unleashed some commercial interest, due their perceived potential as a marketing channel, mainly because they provide interactivity and viral distribution through social networks The first known web widget, Trivia Blitz, was introduced in 1997 It was a game applet offered by Uproarcom the leading online game company from 2000 - 2001 that appeared on over 35,000 websites ranging from GeoCities personal pages to CNN and Tower Records When Uproarcom was acquired by Vivendi Universal in 2001, the widget was discontinued

TV set widgetsedit

Widgets are also available for TVsYahoo! Widget Engine is announced as a component of the next generation TV sets

Information flow of desktop widgetsedit

A desktop widget is a small footprint application, which resides on the user’s desktop using little desktop real estate and computer resources, such as HDD and RAM Its purpose is to provide relevant information to the user in a non-intrusive manner and using few resources Basically, desktop widgets enable the user to view on demand, encapsulated information from predetermined data sources Ideally, a desktop widget must present personalized content, based on the user’s preferences It is supposed to provide the most important information that a user requires on a daily basis Most of the desktop widgets are available as free downloads from the developers’ websites


  1. ^ Ralph R Swick, Mark S Ackerman 1988 "The X Toolkit: More Bricks for Building User-Interfaces, or, Widgets for Hire" USENIX Winter pp 221–228 Retrieved 2007-01-03 
  2. ^ Rampell, Catherine 2007-11-03 "Widgets Become Coins of the Social Realm" The Washington Post p D01 Retrieved 2008-05-07 
  3. ^ Ustinova, Anastasia 2008-07-23 "Developers compete at Facebook conference" San Francisco Chronicle Retrieved 2008-08-14 
  4. ^ "Facebook Expands Power of Platform Across the Web and Around the World" Facebook 2008-07-23 Retrieved 2008-08-14 
  5. ^ Blattner, Glinert, Jorge and Ormsby, 'Metawidgets: towards a theory of multimodal interface design' Appears in Computer Software and Applications Conference, 1992 COMPSAC '92 Proceedings, Sixteenth Annual International ISBN 0-8186-3000-0
  6. ^ Teigene, Arnstein 24 April 2012 "Increased focus on Opera extensions and ending support for Unite applications and Widgets" Archived from the original on 26 April 2012 Retrieved 12 June 2014 
  7. ^ "Widgets 10" World Wide Web Consortium 
  8. ^ "Web Specifications Supported in Opera 9" Opera ASA 
  9. ^ Top 10 Best Android Widgets Ever Retrieved March 22, 2015

See alsoedit

  • Wikipedia Widget - a widget for displaying Wikipedia articles
  • Android operating system
  • Chumby
  • Desk Accessory
  • GUI widget
  • Widget toolkit

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