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- 1. javascript - For questions about programming in ECMAScript (JavaScript/JS) and its different dialects/implementations (except for ActionScript). Note that JavaScript is NOT Java. Include all tags that are relevant… 2529852 questions - 135 asked today, 1328 this week
- 2. python - Python is a dynamically typed, multi-purpose programming language. It is designed to be quick to learn, understand, and use, and enforces a clean and uniform syntax. Please note that Python 2 is offic… - 2195464 questions - 227 asked today, 2207 this week
- 3. java - Java is a high-level object-oriented programming language. Use this tag when you're having problems using or understanding the language itself. This tag is frequently used alongside other tags for lib… - 1918226 questions - 104 asked today, 907 this week
- 5. php - PHP is an open-source, multi-paradigm, dynamically-typed, and interpreted scripting language designed initially for server-side web development. Use this tag for questions about programming in the PHP… - 1465015 questions - 36 asked today, 422 this week
- 6. android - Android is Google's mobile operating system, used for programming or developing digital devices (Smartphones, Tablets, Automobiles, TVs, Wear, Glass, IoT). For topics related to Android, use Android-s… - 1417603 questions - 59 asked today, 581 this week
- 7. html - HTML (HyperText Markup Language) is the markup language for creating web pages and other information to be displayed in a web browser. Questions regarding HTML should include a minimal reproducible ex… - 1187869 questions - 60 asked today, 539 this week
- 8. jquery - jQuery is a JavaScript library. jQuery is a popular cross-browser JavaScript library that facilitates Document Object Model (DOM) traversal, event handling, animations, and AJAX interactions by mi… - 1034700 questions - 90 asked this week, 332 this month
- 9. c++ - C++ is a general-purpose programming language. Use this tag for questions about/utilizing C++. Do not also tag questions with [c] unless you have a good reason. C and C++ are different languages. Use … - 807405 questions - 59 asked today, 494 this week
- 10. css - CSS (Cascading Style Sheets) is a representation style sheet language used for describing the look and formatting of HTML (HyperText Markup Language), XML (Extensible Markup Language) documents and SV… - 804793 questions - 47 asked today, 395 this week
- 11. ios - iOS is the mobile operating system running on the Apple iPhone, iPod touch, and iPad. Use this tag [ios] for questions related to programming on the iOS platform. Use the related tags [objective-c] an… - 687450 questions - 18 asked today, 230 this week
- 12. sql - Structured Query Language (SQL) is a language for querying databases. Questions should include code examples, table structure, sample data, and a tag for the DBMS implementation (e.g. MySQL, PostgreSQ… - 671399 questions - 21 asked today, 316 this week
- 13. mysql - MySQL is a free, open-source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL). DO NOT USE this tag for other DBs such as SQL Server, SQLite etc. Those are diff… - 662125 questions - 18 asked today, 251 this week
- 14. r - R is a free, open-source programming language & software environment for statistical computing, bioinformatics, visualization & general computing. Please use minimal reproducible examples others can … - 506297 questions - 35 asked today, 426 this week
- 15. reactjs - React is a JavaScript library for building user interfaces. It uses a declarative, component-based paradigm and aims to be efficient and flexible. - 477449 questions - 76 asked today, 858 this week
- 16. node.js - Node.js is an event-based, non-blocking, asynchronous I/O runtime that uses Google's V8 JavaScript engine and libuv library. It is used for developing applications that make heavy use of the ability t… - 472360 questions - 50 asked today, 455 this week
- 17. arrays - An array is an ordered linear data structure consisting of a collection of elements (values, variables, or references), each identified by one or more indexes. When asking about specific variants of a… - 416913 questions - 8 asked today, 130 this week
- 18. C - C Programming Language is a general-purpose programming language used for system programming (OS and embedded), libraries, games, and cross-platform. This tag should be used with general questions concerning the C languag… - 404412 questions - 28 asked today, 212 this week
- 19. asp.net - ASP.NET is a Microsoft web application development framework that allows programmers to build dynamic web sites, web applications and web services. It is useful to use this tag in conjunction with the… - 374645 questions - 97 asked this week, 318 this month
- 20. json - JSON (JavaScript Object Notation) is a serializable data interchange format that is a machine and human readable. Do not use this tag for native JavaScript objects or JavaScript object literals. Befor… - 360555 questions - 12 asked today, 175 this week
- 21. python-3.x - DO NOT USE UNLESS YOUR QUESTION IS FOR PYTHON 3 ONLY. Always use alongside the standard [python] tag. - 343760 questions - 18 asked today, 229 this week
- 22. .net - Do NOT use for questions about .NET Core - use .net-core instead. The .NET framework is a software framework designed mainly for the Microsoft Windows operating system. It includes an implementation… - 338274 questions - 17 asked today, 234 this week
- 23. ruby-on-rails - Ruby on Rails is 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… - 338116 questions - 8 asked today, 53 this week
- 24. sql-server - Microsoft SQL Server is a relational database management system (RDBMS). Use this tag for all Microsoft SQL Server editions including Compact, Express, Azure, Fast-track, APS (formerly PDW) and Azure … - 334827 questions - 10 asked today, 171 this week
- 25. swift - Swift is a general-purpose programming language developed by Apple Inc first released in 2014 for its platforms and Linux. Swift is open-source. Use the tag only for questions about language features … - 333666 questions - 17 asked today, 214 this week
- 26. django - Django is an open-source server-side web application framework written in Python. It is designed to reduce the effort required to create complex data-driven websites and web applications, with a speci… - 312048 questions - 22 asked today, 204 this week
- 28. objective-c - 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… - 292296 questions - 8 asked this week, 52 this month
- 29. pandas - Pandas is a Python library for data manipulation and data analysis, e.g. dataframes, multidimensional time series and cross-sectional datasets commonly found in statistics, experimental science results, ec… - 287024 questions - 15 asked today, 187 this week
- 30. excel - Only for questions on programming against Excel objects or programming against Excel files, or Excel formula development. You may combine the Excel tag with VBA, VSTO, C#, VB.NET, PowerShell, OLE automation, and other programming re… - 286899 questions - 18 asked today, 219 this week\
- 31. angularjs - Use for questions about Angular.JS (1.x), the open-source JavaScript framework. Do NOT use this tag for Angular 2 or later versions; instead, use the angular tag. - 262742 questions - 12 asked this week, 63 this month
- 32. regex - Regular expressions provide a declarative language to match patterns within strings. They are commonly used for string validation, string parsing[, and string transformation. Specify the language (PHP, Python, etc) … - 260337 questions - 6 asked today, 75 this week
- 33. typescript - TypeScript is a typed superset of JavaScript that transpiles to plain JavaScript. It adds optional types to JavaScript. This tag is for questions specific to TypeScript. It is not used for general Jav… - 230495 questions - 42 asked today, 407 this week
- 34. ruby - Ruby is a multi-platform open-source, dynamic object-oriented interpreted language. The [ruby] tag is for questions related to the Ruby language, including its syntax and its libraries. Ruby on Rails … - 229088 questions - 40 asked this week, 127 this month
- 35. linux - NOTICE: All Linux questions must be related to Linux programming; those that aren't will be closed. Use this tag only if your question relates to programming using Linux APIs or Linux-specific behavior, … - 227563 questions - 26 asked today, 198 this week
- 36. ajax - AJAX (Asynchronous JavaScript and XML) is a technique for creating interactive website user interfaces without the traditional web page refresh or web page reload. It uses asynchronous data exchange between cl… - 221954 questions - 38 asked this week, 131 this month
- 37. iphone - unless you are addressing Apple's iPhone and/or iPod touch specifically. For questions not dependent on hardware, use the tag ios]. More tags to consider are [xcode] (but only if … - 220685 questions - 12 asked this week, 52 this month
- 38. xml - XML (Extensible Markup Language) is a structured document format defining text encoding rules. When using this tag include additional tags such as programming language, tool sets, XML technologies bei… - 214768 questions - 70 asked this week, 269 this month
- 39. vba - Visual Basic for Applications (VBA) is an event-driven, object-oriented programming language for writing macros, used for the entire Office suite as well as other applications. VBA is not equivalent t… - 214316 questions - 11 asked today, 140 this week
- 40. laravel - The Laravel framework is an open-sourced PHP web framework that allows developers to create dynamic and scalable web applications. The source code of Laravel is hosted on GitHub and released under the… - 211700 questions - 19 asked today, 233 this week
- 41. spring - The Spring Framework is an open-source framework for application development on the Java platform. At its core is rich support for component-based architectures, and it currently has over twenty highl… - 211329 questions - 20 asked today, 170 this week
- 42. asp.net-mvc - The ASP.NET MVC Framework is an open source web application framework and tooling that implements a version of the model-view-controller (MVC) pattern tailored towards web applications and built upon … - 201248 questions - 43 asked this week, 143 this month
- 43. database - A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The database data are typically organized to database model aspects of reality in a wa… - 195215 questions - 15 asked today, 152 this week
- 44. wordpress - Consider using https://wordpress.stackexchange.com . This tag is for programming-specific questions about the WordPress content management system. Off-topic questions include those about theme develop… - 192331 questions - 14 asked today, 154 this week
- 45. string - A string is a finite sequence of symbols, commonly used for text, though sometimes for arbitrary data. - 184530 questions - 5 asked today, 61 this week
- 46. flutter - for questions about the Flutter cross-platform UI toolkit. If your question is platform-specific, tag the platform as well (e.g., android], ios, etc.). You may also wish to include t… - 176938 questions - 52 asked today, 454 this week
- 47. postgresql - PostgreSQL is an open-source, relational database management system (RDBMS) available for all major platforms, including Linux, UNIX, Windows and macOS. Mention your version of Postgres when asking que… - 176282 questions - 12 asked today, 202 this week
- 48. mongodb - MongoDB is a scalable, cross-platform, high-performance, open source, document-oriented NoSQL database. It supports a large number of languages and application development platforms. Questions about s… - 175917 questions - 9 asked today, 110 this week
- 49. wpf - Windows Presentation Foundation, or WPF, is a subsystem for rendering user interfaces in Windows-based applications. - 169695 questions - 7 asked today, 63 this week
- 50. windows - Writing software specific to the Microsoft Windows operating system: Windows APIs, Windows programming, Windows behaviors, etc. GENERAL WINDOWS SUPPORT IS OFF-TOPIC. Support questions may be asked on https://superuser.com - 168895 questions - 12 asked today, 179 this week
- 51. xcode - Xcode is Apple's integrated development environment (Apple's IDE). USAGE NOTE: Use this tag only for questions about the Xcode IDE itself, and not for general Mac programming or iOS programming topics. Use cocoa for Ma… - 159685 questions - 6 asked today, 66 this week
- 52. amazon-web-services - When asking about Amazon Web Services (AWS), specify which AWS services you are using. Provide details on your AWS architecture / AWS configuration - do not include proprietary information or sensitive information this is a pu… - 158759 questions - 19 asked today, 238 this week
- 53. bash - for questions about bash scripts written for the Bash command shell. For shell scripts with syntax or other errors, please check them at ShellCheck.net (https://shellcheck.net) before posting them here. Quest… - 155775 questions - 77 asked this week, 257 this month
- 54. git - Git is an open-source distributed version control system (DVCS). Use this tag for questions about Git usage and Git workflows. Do not use this tag for general programming questions that happen to involve … - 152415 questions - 11 asked today, 106 this week
- 55. oracle - Oracle Database is a Multi-Model Database Management System created by Oracle Corporation. Do NOT use this tag for other products owned by Oracle, such as Java and MySQL. - 151692 questions - 82 asked this week, 313 this month
- 56. spring-boot - Use the Spring Boot tag for questions related to Spring Boot Framework and the features it brings to your JVM-based web application. This includes questions about Spring Boot configuration, embedding of the Spring Boot Web servers, se… - 148464 questions - 39 asked today, 329 this week
- 57. dataframe - A data frame is a 2D tabular data structure. Usually, it contains data where rows are observations and columns are variables and are allowed to be of different types (as distinct from an array or matr… - 146165 questions - 8 asked today, 106 this week
- 58. firebase - Firebase is a serverless platform for unified development of applications for mobile devices and for [the web]]. - 143327 questions - 9 asked today, 159 this week
- 59. list - may refer to: a linked list (an ordered set of nodes, each referencing its successor), or a form of dynamic array. Not to be used for HTML lists, use html-lists instead. - 141680 questions - 6 asked today, 54 this week
- multithreading - For questions regarding multi-threading, the ability of a computer or a program to perform work concurrently or asynchronously by utilizing multiple concurrent streams of execution (generally referred… - 140360 questions - 8 asked today, 56 this week
- vb.net - Visual Basic.NET (VB.NET) is a multi-paradigm, managed, type-safe, object-oriented computer programming language. Along with C# and F#, it is one of the main languages targeting the .NET Framework. VB… - 140314 questions - 7 asked today, 45 this week
- azure - Microsoft Azure is a Platform as a Service and Infrastructure as a Service cloud computing platform. Use this tag for Azure programming questions concerning Azure. General server help can be obtained at Sup… - 140065 questions - 13 asked today, 285 this week
- docker - For questions about building Docker containers and running Docker containers. DOCKER QUESTIONS MUST BE SPECIFICALLY RELATED TO Docker SOFTWARE DEVELOPMENT. Suitable topics include Dockerfiles, Docker Compose, and Docker architecture… - 137786 questions - 23 asked today, 264 this week
- react-native - React Native is a JavaScript library used to build native mobile apps using React. The focus of React Native is on developer efficiency across all the mobile platforms you care about - learn once, write anyw… - 137228 questions - 29 asked today, 242 this week
eclipse Eclipse is an open source IDE and platform for building applications. There is a wide variety of plugins for various programming languages and other development-oriented tools (such as modeling, datab… 124982 questions 25 asked this week, 105 this month algorithm An algorithm is a sequence of well-defined steps that defines an abstract solution to a problem. Use this tag when your issue is related to algorithm design. 120706 questions 13 asked today, 57 this week macos macOS (formerly known as OS X or Mac OS X) is the desktop operating system from Apple, found on Macintosh computers. Use this tag only if your question relates to using macOS APIs or macOS-specific… 117740 questions 6 asked today, 88 this week powershell PowerShell is a cross-platform command line and scripting utility from Microsoft. Use this tag for questions about writing and executing PowerShell scripts ONLY. Programming questions specific to the … 117357 questions 114 asked this week, 467 this month visual-studio if you have a specific question about Visual Studio features and functionality. DO NOT use this tag on questions regarding code which merely happened to be written in Visual Studio. Cons… 115337 questions 5 asked today, 63 this week image for questions related to the loading, formatting, saving, compression, and display of images in the context of source code. This tag should also be used for assistance using various i… 114012 questions 8 asked today, 62 this week numpy NumPy is one of the many modules in Python that adds support of large multidimensional arrays and matrixes, along with a large library of high-level mathematical functions for operations with these ar… 114011 questions 11 asked today, 84 this week forms A form is essentially a container that can be used to hold any amount of any subset of several types of data. HTML forms are used to pass data to a server. VB and C# forms are the windows used to inte… 113631 questions 6 asked today, 38 this week