A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines.
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an object-oriented language and runtime environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM).
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an open-source server-side scripting language widely used in web development. Use this tag for questions about PHP classes, methods, functions, syntax and use.
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a dynamically-typed language commonly used for client-side scripting. Use this tag for questions regarding ECMAScript and its dialects/implementations (excluding ActionScript). Unless a …
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Google's software stack for mobile devices. Please use the Android-specific tags such as [android-intent], not [intent]. For non-developer questions, see http://android.stackexchange.com.
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a cross-browser JavaScript library that facilitates DOM traversal, event handling, animation and AJAX interactions.
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a widely-used, statically-typed, free-form, compiled, multi-paradigm, multi-level, imperative, general-purpose, object-oriented programming language based on C.
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a dynamically and strongly typed programming language whose design philosophy emphasizes code readability. Two significantly different versions of Python (2 and 3) are in use. Please mention…
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the principal markup language used for structuring web pages and formatting content. The most recent iteration of HTML is HTML5.
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a web application framework developed by Microsoft to allow programmers to build dynamic web sites and web applications.
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Specific to Apple's iPhone and/or iPod touch, but inapplicable to iPad. For questions not dependent on hardware, use the "iOS" tag. Another tag to consider is "cocoa-touch" (but not "cocoa"). Please r…
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an open-source, relational database management system.
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a software framework designed mainly for the Microsoft Windows operating system. It includes an implementation of the Base Class Library, Common Language Runtime (commonly referr…
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Apple's operating system for mobile devices, such as the iPhone, iPod touch, iPad and Apple TV (2nd generation and up) devices. It shares a lot with Mac OS X, but is optimized for touch-based i…
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a language used to control the visual presentation of HTML and XML documents including (but not limited to) colors, layout and fonts.
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a language for querying databases. Questions should include code examples and table structure. This tag refers to the standard language, not for questions about spec…
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should be used only on questions that are about Objective-C features or depend on code in the language. The tags "cocoa" and "cocoa-touch" should be used to ask about Apple's frameworks or cl…
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an open source full-stack web application framework written in Ruby. It follows the popular MVC framework model and is known for its "convention over configuration" approach to applic…
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a general-purpose computer programming language used for operating systems, games and other high performance work and is clearly distinct from C++. It was developed in 1972 by Dennis Ritchie for …
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an open-source dynamic object-oriented interpreted language created by Yukihiro Matsumoto (Matz) in 1993.
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a relational database management system from Microsoft. Use this tag for all SQL Server editions including Compact, Express, Azure, FastTrack and PDW.
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a subsystem for rendering user interfaces in Windows-based applications.
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a structured document format that defines human- and machine-readable encoding rules.
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a technique for creating seamless interactive websites via asynchronous data exchange between client and server. AJAX facilitates communication with the serve…
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a Microsoft web application framework that implements the model-view-controller (MVC) pattern. The latest release of the framework offers REST-style web services develop…
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Regular expressions (often shortened to "regex") are a declarative language used for pattern matching within strings. Please also include a tag specifying the programming language or tool you are usin…
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an organized collection of data typically used to model certain situations. Use this tag if you have questions about designing a database. If it is about a particular database management…
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an ordered data structure consisting of a collection of elements (values or variables), each identified by one (single dimensional array, or vector) or multiple indexes.
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Apple's integrated development environment (IDE). This tag should only be used for questions about Xcode itself, and not for general Mac or iOS programming topics. Use [cocoa] for Mac program…
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an open source Web 2.0 application framework, written in Python. Its primary goal is to ease the creation of complex database-driven websites.
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specific to the GNU/Linux operating system. If your question has nothing to do with Linux APIs or Linux-specific behaviour then do not use this tag, even if you are running on L…
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a family of client, server, and mobile operating systems, developed by Microsoft. If your question has nothing to do with Windows APIs or Windows-specific behaviour then do not use this tag…
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a lightweight data exchange format inspired by JavaScript object literals. It is often used with JavaScript, Ajax, and RESTful web services but is completely langu…
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an object-oriented computer programming language that can be viewed as an evolution of Microsoft's Visual Basic 6 (VB6) but implemented on the Microsoft .NET Framework.
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an open source IDE with plugins available to support a large variety of languages. This tag should only be used for questions about the Eclipse IDE and not for generalized programming topic…
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Facebook Platform lets developers integrate their apps directly into the Facebook social networking service.
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