ActiveX is a software framework created by Microsoft that adapts its earlier Component Object Model (COM) and Object Linking and Embedding (OLE) technologies for content downloaded from a network, particularly from the World Wide Web.
Addison-Wesley is a publisher of textbooks and computer literature.
Adobe Photoshop Album is a piece of application software by Adobe Systems designed to import, organize and edit digital photos, and allows quick and easy searching and sharing of entire photo collections.
Adobe Photoshop Elements is a raster graphics editor for entry-level photographers, image editors and hobbyists.
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets.
AMD Radeon Software (formerly named ATI Catalyst and AMD Catalyst) is a device driver and utility software package for Advanced Micro Devices's graphics cards and APUs.
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
Android software development is the process by which new applications are created for devices running the Android operating system.
In computer programming, an application framework consists of a software framework used by software developers to implement the standard structure of application software.
An application software (app or application for short) is a computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user.
Apress Media LLC is a publisher of information technology books, based in New York City.
AsteroidOS is an open source operating system designed for smartwatches.
AudioCodes Ltd. designs, develops and sells advanced Voice-over-IP (VoIP) and converged VoIP and Data networking products and applications to service providers and enterprises.
Autodesk, Inc. is an American multinational software corporation that makes software for the architecture, engineering, construction, manufacturing, media, and entertainment industries.
Autodesk Maya, commonly shortened to Maya, is a 3D computer graphics application that runs on Windows, macOS and Linux, originally developed by Alias Systems Corporation (formerly Alias|Wavefront) and currently owned and developed by Autodesk, Inc. It is used to create interactive 3D applications, including video games, animated film, TV series, or visual effects.
Berkeley Software Distribution (BSD) was a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995.
Bitcoin Cash is a cryptocurrency.
Bitcoin Core is an implementation of bitcoin.
BlackBerry 10 is a proprietary mobile operating system for the BlackBerry line of smartphones, both developed by BlackBerry Limited (formerly Research In Motion).
BlackBerry Limited is a Canadian multinational company specializing in enterprise software and the Internet of things.
Blizzard Entertainment, Inc. is an American video game developer and publisher based in Irvine, California, and is a subsidiary of the American company Activision Blizzard.
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485GHz) from fixed and mobile devices, and building personal area networks (PANs).
In computer programming, boilerplate code or boilerplate refers to sections of code that have to be included in many places with little or no alteration.
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and redistribution of covered software.
Budgie is a desktop environment that uses GNOME technologies such as GTK+ (> 3.x) and is developed by the Solus project as well as by contributors from numerous communities like openSUSE Tumbleweed, Arch Linux and Ubuntu Budgie.
Build automation is the process of automating the creation of a software build and the associated processes including: compiling computer source code into binary code, packaging binary code, and running automated tests.
C++ ("see plus plus") is a general-purpose programming language.
Chromium is an open-source Web browser project started by Google, to provide the source code for the proprietary Google Chrome browser.
Classic Mac OS is a colloquial term used to describe a series of operating systems developed for the Macintosh family of personal computers by Apple Inc. from 1984 until 2001.
Cocoa is Apple's native object-oriented application programming interface (API) for their operating system macOS.
In computing, code generation is the process by which a compiler's code generator converts some intermediate representation of source code into a form (e.g., machine code) that can be readily executed by a machine.
A command-line interface or command language interpreter (CLI), also known as command-line user interface, console user interface and character user interface (CUI), is a means of interacting with a computer program where the user (or client) issues commands to the program in the form of successive lines of text (command lines).
In computing, cross-platform software (also multi-platform software or platform-independent software) is computer software that is implemented on multiple computing platforms.
CryEngine is a game engine designed by the German game developer Crytek.
In computing, D-Bus (for "Desktop Bus"), a software bus, is an inter-process communication (IPC) and remote procedure call (RPC) mechanism that allows communication between multiple computer programs (that is, processes) concurrently running on the same machine.
The Danaher Corporation is a globally diversified conglomerate with its headquarters in Washington, D.C., United States.
In computer science, declarative programming is a programming paradigm—a style of building the structure and elements of computer programs—that expresses the logic of a computation without describing its control flow.
Deepin (stylized as deepin; formerly known as Linux Deepin and Hiweed Linux) is an open source operating system for computers.
In computing, a desktop environment (DE) is an implementation of the desktop metaphor made of a bundle of programs running on top of a computer operating system, which share a common graphical user interface (GUI), sometimes described as a graphical shell.
Deutsche Flugsicherung (DFS) is the company in charge of air traffic control for Germany.
DirectFB (Direct Frame Buffer) is a software library with a small memory footprint that provides graphics acceleration, input device handling and abstraction layer, and integrated windowing system with support for translucent windows and multiple display layers on top of the Linux framebuffer without requiring any kernel modifications.
The Document Object Model (DOM) is a cross-platform and language-independent application programming interface that treats an HTML, XHTML, or XML document as a tree structure wherein each node is an object representing a part of the document.
Dragonframe is stop motion animation software.
DreamWorks Pictures (also known as DreamWorks SKG or DreamWorks Studios, commonly referred to as DreamWorks) is an American film production label of Amblin Partners.
EAGLE is a scriptable electronic design automation (EDA) application with schematic capture, printed circuit board (PCB) layout, auto-router and computer-aided manufacturing (CAM) features.
EGL is an interface between Khronos rendering APIs (such as OpenGL, OpenGL ES or OpenVG) and the underlying native platform windowing system.
Electronic Arts Inc. (EA) is an American video game company headquartered in Redwood City, California.
Emacs is a family of text editors that are characterized by their extensibility.
The European Space Agency (ESA; Agence spatiale européenne, ASE; Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space.
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions.
The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on 4 October 1985 to support the free software movement, which promotes the universal freedom to study, distribute, create, and modify computer software, with the organization's preference for software being distributed under copyleft ("share alike") terms, such as with its own GNU General Public License.
A free software license is a notice that grants the recipient of a piece of software extensive rights to modify and redistribute that software.
The free software movement (FSM) or free / open source software movement (FOSSM) or free / libre open source software (FLOSS) is a social movement with the goal of obtaining and guaranteeing certain freedoms for software users, namely the freedom to run the software, to study and change the software, and to redistribute copies with or without changes.
FreeMat is a free open-source numerical computing environment and programming language, similar to MATLAB and GNU Octave.
Git is a version control system for tracking changes in computer files and coordinating work on those files among multiple people.
Gitorious was a shared web hosting service for collaborative free and open-source software development projects that use the Git revision control system.
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force.
The GNU Compiler Collection (GCC) is a compiler system produced by the GNU Project supporting various programming languages.
The GNU General Public License (GNU GPL or GPL) is a widely used free software license, which guarantees end users the freedom to run, study, share and modify the software.
The GNU Lesser General Public License (LGPL) is a free software license published by the Free Software Foundation (FSF).
Google Earth is a computer program that renders a 3D representation of Earth based on satellite imagery.
The graphical user interface (GUI), is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation.
Greenspun's tenth rule of programming is an aphorism in computer programming and especially programming language circles that states:, by Paul Graham.
GTK+ (formerly GIMP Toolkit) is a cross-platform widget toolkit for creating graphical user interfaces.
HP (also known as HP Inc. and stylized as hp) is an American technology company which develops personal computers (PCs), printers and related supplies, as well as 3D Printing solutions.
HP-UX (from "Hewlett Packard Unix") is Hewlett Packard Enterprise's proprietary implementation of the Unix operating system, based on UNIX System V (initially System III) and first released in 1984.
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, and hypermedia information systems.
AIX (Advanced Interactive eXecutive, pronounced) is a series of proprietary Unix operating systems developed and sold by IBM for several of its computer platforms.
An integrated development environment (IDE) is a software application that provides comprehensive facilities to computer programmers for software development.
INTEGRITY and INTEGRITY-178B are real-time operating systems (RTOSes) produced and marketed by Green Hills Software.
Intel Corporation (stylized as intel) is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.
In computing, internationalization and localization are means of adapting computer software to different languages, regional differences and technical requirements of a target locale.
iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware.
The iOS SDK (Software Development Kit) (formerly iPhone SDK) is a software development kit developed by Apple Inc. The kit allows for the development of mobile apps on Apple's iOS operating system.
iPad is a line of tablet computers designed, developed and marketed by Apple Inc., which run the iOS mobile operating system.
iPhone is a line of smartphones designed and marketed by Apple Inc. The iPhone line of products use Apple's iOS mobile operating system software.
John Deere is the brand name of Deere & Company, an American corporation that manufactures agricultural, construction, and forestry machinery, diesel engines, drivetrains (axles, transmissions, gearboxes) used in heavy equipment, and lawn care equipment.
John Wiley & Sons, Inc., also referred to as Wiley, is a global publishing company that specializes in academic publishing.
Jolla Oy (sometimes referred to as Jolla Ltd.) is a Finnish technology company; a vendor of mobile devices and the developer of Sailfish OS. Headquartered in Helsinki, Finland, Jolla has its own research and development offices in Helsinki, Tampere and Cyberport, Hong Kong. Jolla was founded in 2011 by former Nokia staff of the MeeGo project team to use the MeeGo opportunities and its "endless possibilities". Pronounced 'yolla', the company name is Finnish for dinghy (a small agile boat or life rescue boat). It was intended as an ironic joke about the "burning platform memo" which contained the metaphor to "jump into the cold sea water" or "burn with burning platform" used in context of the Nokia business activities, in the memo leaked by then-Nokia CEO Stephen Elop in February 2011, with Osborne effect-like consequences.
K Desktop Environment 1 was the inaugural series of releases of the K Desktop Environment.
KDE is an international free software community that develops Free and Open Source based software.
KDE on Cygwin is the port of K Desktop Environment 1, 2, and 3 and the corresponding versions of the Qt toolkit to the Windows Operating System by using Cygwin, a POSIX emulation layer.
KDE Platform 4 is a collection of libraries and software frameworks by KDE that serve as technological foundation for KDE Software Compilation 4 distributed under the GNU Lesser General Public License (LGPL).
Krita is a free-software and an open-source raster/vector graphics editor, designed primarily for digital painting and animation purposes.
In computing, a binding from a programming language to a library or operating system service is an application programming interface (API) providing glue code to use that library or service in a given programming language.
License compatibility is a legal framework that allows for pieces of software with different software licenses to be distributed together.
Linux is a family of free and open-source software operating systems built around the Linux kernel.
The Linux framebuffer (fbdev) is a graphic hardware-independent abstraction layer to show graphics on a computer monitor, typically on the console.
Operating systems based on the Linux kernel are used in embedded systems such as consumer electronics (i.e. set-top boxes, smart TVs, personal video recorders (PVRs), in-vehicle infotainment (IVI), networking equipment (such as routers, switches, wireless access points (WAPs) or wireless routers), machine control, industrial automation, navigation equipment, spacecraft flight software, and medical instruments in general).
The following platforms are officially supported by Qt.
This article provides a list of widget toolkits (also known as GUI frameworks), used to construct the graphical user interface (GUI) of programs, organized by their relationships with various operating systems.
In computer systems a loader is the part of an operating system that is responsible for loading programs and libraries.
Luxoft is an international custom software development company with more than 13,100 employees, 41 offices in 20 countries in North America, Western and Eastern Europe, Asia Pacific, and South Africa.
LXDE (abbreviation for Lightweight X11 Desktop Environment) is a free desktop environment with comparatively low resource requirements.
LXQt is a bundle of software packages under development, with the aim of providing a complete desktop environment.
macOS (previously and later) is a series of graphical operating systems developed and marketed by Apple Inc. since 2001.
Meta Object System is a part of Qt framework core provided to support Qt extensions to C++ like signals/slots for inter-object communication, run-time type information, and the dynamic property system.
In computer science, a metaobject is an object that manipulates, creates, describes, or implements objects (including itself).
Microsoft Corporation (abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington.
Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.
The Mozilla Public License (MPL) is a free and open source software license developed and maintained by the Mozilla Foundation.
Multi-licensing is the practice of distributing software under two or more different sets of terms and conditions.
Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other.
No Starch Press is an American publishing company, specializing in technical literature often geared towards the geek, hacker, and DIY subcultures.
Nokia is a Finnish multinational telecommunications, information technology, and consumer electronics company, founded in 1865.
O'Reilly Media (formerly O'Reilly & Associates) is an American media company established by Tim O'Reilly that publishes books and Web sites and produces conferences on computer technology topics.
The observer pattern is a software design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods.
Open Palmtop Integrated Environment (OPIE) is an open source graphical user interface for PDAs and other devices running Linux.
Open-source governance (also known as open politics) is a political philosophy which advocates the application of the philosophies of the open-source and open-content movements to democratic principles to enable any interested citizen to add to the creation of policy, as with a wiki document.
An open-source license is a type of license for computer software and other products that allows the source code, blueprint or design to be used, modified and/or shared under defined terms and conditions.
Open Graphics Library (OpenGL) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics.
Orange is an open-source data visualization, machine learning and data mining toolkit.
, formerly known as, is a Japanese multinational electronics corporation headquartered in Kadoma, Osaka, Japan.
A personal digital assistant (PDA), also known as a handheld PC, is a variety mobile device which functions as a personal information manager.
Koninklijke Philips N.V. (Philips, stylized as PHILIPS) is a Dutch multinational technology company headquartered in Amsterdam currently focused in the area of healthcare.
Prentice Hall is a major educational publisher owned by Pearson plc.
A programming language is a formal language that specifies a set of instructions that can be used to produce various kinds of output.
Q (named cue) is the 17th letter of the modern English alphabet and the ISO basic Latin alphabet.
The Q Public License (QPL) is a non-copyleft license, created by Trolltech for its free edition of the Qt.
QGIS (previously known as Quantum GIS) is a free and open-source cross-platform desktop geographic information system (GIS) application that supports viewing, editing, and analysis of geospatial data.
qmake is an utility that automates the generation of makefiles.
QML (Qt Modeling Language) is a user interface markup language.
QNX is a commercial Unix-like real-time operating system, aimed primarily at the embedded systems market.
Qt ("cute") is a cross-platform application framework and widget toolkit for creating classic and embedded graphical user interfaces, and applications that run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.
The Qt Project is a project to co-ordinate the development of the Qt software framework.
Qt Quick is a free software application framework developed and maintained by the Qt Project within the Qt framework.
QtScript is a scripting engine that has been part of the Qt cross-platform application framework since version 4.3.0.
Rational ClearCase is a family of computer software tools that supports software configuration management (SCM) of source code and other software development assets.
Robert Bosch GmbH, or Bosch, is a German multinational engineering and electronics company headquartered in Gerlingen, near Stuttgart, Germany.
Rosegarden is a free software digital audio workstation program developed for Linux with ALSA and Qt4.
The S60 Platform (formerly Series 60 User Interface) was a software platform for smartphones that runs on the Symbian operating system.
Sailfish OS (also styled as SailfishOS or abbreviated to SFOS) is a general purpose Linux distribution used commonly as a mobile operating system combining the Linux kernel for a particular hardware platform, the open-source Mer core stack of middleware, a proprietary UI contributed by Jolla or an open source UI, and other third-party components.
Samsung is a South Korean multinational conglomerate headquartered in Samsung Town, Seoul.
Scribus is a desktop publishing (DTP) application, released under the GNU General Public License as free software.
A scripting or script language is a programming language that supports scripts: programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator.
Sibelius is a scorewriter program developed and released by Sibelius Software Ltd (now part of the American conglomerate, Avid Technology).
Siemens AG is a German conglomerate company headquartered in Berlin and Munich and the largest industrial manufacturing company in Europe with branch offices abroad.
SAX (Simple API for XML) is an event-driven online algorithm for parsing XML documents, with an API developed by the XML-DEV mailing list.
Simple Desktop Display Manager (SDDM) is a display manager (a graphical login program and session manager) for the X11 and Wayland windowing systems.
Sky plc is a pan-European British media and telecommunications company headquartered in London.
Skype is a telecommunications application software product that specializes in providing video chat and voice calls between computers, tablets, mobile devices, the Xbox One console, and smartwatches via the Internet and to regular telephones.
A smartphone is a handheld personal computer with a mobile operating system and an integrated mobile broadband cellular network connection for voice, SMS, and Internet data communication; most, if not all, smartphones also support Wi-Fi.
Solaris is a Unix operating system originally developed by Sun Microsystems.
Source is a 3D video game engine developed by Valve Corporation.
In computing, source code is any collection of code, possibly with comments, written using a human-readable programming language, usually as plain text.
SPDY (pronounced "speedy") is a deprecated open-specification networking protocol that was developed primarily at Google for transporting web content.
SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).
Stellarium is an open-source free-software planetarium, licensed under the terms of the GNU General Public License version 2, available for Linux, Windows, and macOS.
Subsurface is a software for logging and planning scuba dives.
Symbian is a discontinued mobile operating system (OS) and computing platform designed for smartphones.
TeamViewer is proprietary computer software for remote control, desktop sharing, online gaming, web conferencing and file transfer between computers.
Telegram is a cloud-based instant messaging and voice over IP service developed by Telegram Messenger LLP, a privately held company registered in London, United Kingdom, founded by the Russian entrepreneur Pavel Durov.
The Tesla Model S is a full-sized / mid-size luxury all-electric five-door liftback Q-car (for P models), produced by Tesla, Inc., and introduced on June 22, 2012.
The Qt Company (formerly Trolltech) is a software company based in Espoo, Finland.
In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
Transport Layer Security (TLS) – and its predecessor, Secure Sockets Layer (SSL), which is now deprecated by the Internet Engineering Task Force (IETF) – are cryptographic protocols that provide communications security over a computer network.
In computing, type introspection is the ability of a program to examine the type or properties of an object at runtime.
Ubuntu Touch (also known as Ubuntu Phone) is a mobile version of the Ubuntu operating system that was originally developed by Canonical Ltd. and is now being developed by the UBports community.
Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
Valve Corporation is an American video game developer and digital distribution company headquartered in Bellevue, Washington.
Oracle VM VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and Innotek VirtualBox) is a free and open-source hypervisor for x86 computers currently being developed by Oracle Corporation.
VLC media player (commonly known as VLC) is a free and open-source, portable, cross-platform media player and streaming media server developed by the VideoLAN project.
The Volvo Group (Volvokoncernen; legally Aktiebolaget Volvo, shortened to AB Volvo) (stylized as VOLVO) is a Swedish multinational manufacturing company headquartered in Gothenburg.
Vulkan is a low-overhead, cross-platform 3D graphics and compute API.
VxWorks is a real-time operating system (RTOS) developed as proprietary software by Wind River Systems, an Intel subsidiary of Alameda, California, US.
Walt Disney Animation Studios (WDAS), also referred to as Disney Animation, headquartered at the Walt Disney Studios in Burbank, California, is an American animation studio that creates animated feature films, short films, and television specials for The Walt Disney Company.
Wayland is a computer protocol that specifies the communication between a display server (called a Wayland compositor) and its clients, as well as a reference implementation of the protocol in the C programming language.
A web framework (WF) or web application framework (WAF) is a software framework that is designed to support the development of web applications including web services, web resources, and web APIs.
WebKit is a browser engine used in Apple's Safari browser and other products.
webOS, also known as LG webOS and previously known as Open webOS, HP webOS and Palm webOS, is a Linux kernel-based multitasking operating system for smart devices such as smart TVs and it has been used as a mobile operating system.
WebSocket is a computer communications protocol, providing full-duplex communication channels over a single TCP connection.
A control element (sometimes called a control or widget) in a graphical user interface is an element of interaction, such as a button or a scroll bar.
A widget toolkit, widget library, GUI toolkit, or UX library is a library or a collection of libraries containing a set of graphical control elements (called widgets) used to construct the graphical user interface (GUI) of programs.
Windows 10 (codenamed Redstone, formerly Threshold) is a personal computer operating system developed and released by Microsoft, as part of the Windows NT family of operating systems.
Windows 10 has twelve editions, all with varying feature sets, use cases, or intended devices.
Windows 10 Mobile is a mobile operating system developed by Microsoft, released in 2015.
Windows 7 (codenamed Vienna, formerly Blackcomb) is a personal computer operating system developed by Microsoft.
Windows 8 is a personal computer operating system developed by Microsoft as part of the Windows NT family of operating systems.
Windows Embedded CE 6.0 (codenamed "Yamazaki") is the sixth major release of Microsoft Windows embedded operating system targeted to enterprise specific tools such as industrial controllers and consumer electronics devices like digital cameras.
Windows Embedded Compact 7 (formerly known as Windows Embedded CE 7.0) is the seventh major release of Windows Embedded CE operating system.
Windows Phone (WP) is a family of discontinued mobile operating systems developed by Microsoft for smartphones as the replacement successor to Windows Mobile and Zune.
Windows Phone 8 is the second generation of the Windows Phone mobile operating system from Microsoft.
Windows Phone 8.1 is the third generation of Microsoft's Windows Phone mobile operating system, succeeding Windows Phone 8.
Windows Runtime (WinRT) is a platform-agnostic application architecture first introduced in Windows 8 and Windows Server 2012 in 2012.
Windows Vista (codenamed Longhorn) is an operating system by Microsoft for use on personal computers, including home and business desktops, laptops, tablet PCs and media center PCs.
Windows XP (codenamed Whistler) is a personal computer operating system that was produced by Microsoft as part of the Windows NT family of operating systems.
Wireshark is a free and open source packet analyzer.
Wolfram Mathematica (usually termed Mathematica) is a modern technical computing system spanning most areas of technical computing — including neural networks, machine learning, image processing, geometry, data science, visualizations, and others.
WPS Office (an acronym for Writer, Presentation and Spreadsheets, previously known as Kingsoft Office) is an office suite for Microsoft Windows, Linux, iOS and Android OS, developed by Zhuhai-based Chinese software developer Kingsoft.
wxWidgets ("wix-widgets", formerly wxWindows) is a widget toolkit and tools library for creating graphical user interfaces (GUIs) for cross-platform applications.
X Toolkit Intrinsics (also known as Xt, for X toolkit) is a library that implements an API to facilitate the development of programs with a graphical user interface (GUI) for the X Window System.
The X Window System (X11, or shortened to simply X) is a windowing system for bitmap displays, common on UNIX-like computer operating systems.
In computing, Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.
XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium (W3C), specifies how to formally describe the elements in an Extensible Markup Language (XML) document.
XnView is an image organizer and general-purpose file manager used for viewing, converting, organizing and editing raster images, as well as general purpose file management.
XPath (XML Path Language) is a query language for selecting nodes from an XML document.
XQuery (XML Query) is a query and functional programming language that queries and transforms collections of structured and unstructured data, usually in the form of XML, text and with vendor-specific extensions for other data formats (JSON, binary, etc.). The language is developed by the XML Query working group of the W3C.
XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML documents, or other formats such as HTML for web pages, plain text or XSL Formatting Objects, which may subsequently be converted to other formats, such as PDF, PostScript and PNG.