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.

Software to run on the Microsoft Windows family of operating systems.
Software free of financial cost. For software that includes the source code, [open-source] is the best tag. Software can be either [gratis] or [open-source], or both. Only use this tag if "gratis" is…
Software to run on, or interact with, the Android operating system. For non-recommendation questions, please ask on android.stackexchange.com, or stackoverflow.com for programming Android applications…
Software to run on the Linux operating system.
Software required to be open-source. This is not to be confused with "gratis" software, which is free of cost. Open-source, sometimes called "free" or "libre" software, has the original source code fr…
Software with a user interface displayed in a web browser. These applications may run on third-party servers or be self-hosted.
Code libraries to write programs to accomplish specific tasks. Please use this tag together with one for the associated programming language.
Software regarding the Python programming language, Python IDEs, and Python development tools.
Software regarding JavaScript libraries, frameworks, and plugins, as well as JavaScript software development tools.
Software regarding Java development tools and libraries for the Java programming language.
628 questions
Software that manipulates PDF (Portable Document Format) files: converting to or from PDF, printing, editing, assembling or splitting, …
Software to run on Apple's OS X operating system.
588 questions
Software tools used during the development of other software.
Software to create, manage, or interact with databases or software related to databases. For specific databases, please use the corresponding specific tag (see wiki).
566 questions
Software to create or manipulate video.
Software related to the C++ programming language, including development environments, editors, compilers, analyzers, and libraries.
Software specifically for Windows 7. Please tag with [windows] instead unless your question involves functions specific to Windows 7.
446 questions
Tools used during the development of web-apps or websites.
Software related to HTML, the main markup language used in the creation of web pages.
434 questions
Software to create, read, record, or modify audio.
430 questions
Software to manage files stored on device(s), network(s), and/or in the cloud.
415 questions
Software for handling images and graphics, including creating, editing, converting, organizing, and printing.
410 questions
Software to run on the iOS operating system series developed and sold by Apple Inc. For questions involving Apple hardware, software, and services see also apple.stackexchange.com. For general compute…
393 questions
Software specifically for Windows 10. Please tag with [windows] instead unless your question involves functions specific to Windows 10.
Libraries in C# and software to develop C# programs. C# is an object-oriented programming language developed by Microsoft within its .NET Framework.
Web browser software and web browser add-ons. If you are specifically looking for a Firefox or Chrome add-on/extension/plugin, use the tag [firefox] or [chrome] instead.
358 questions
Integrated development environments (IDEs) for, libraries to use with, or products based upon the PHP language.
338 questions
Software to read/write/manage emails (client-side), or to process them (server-side).
Extensions or programs that work with Google's Chrome web browser.
316 questions
Software to edit text. Also consider the `html-editor` tag, if appropriate.
306 questions
Questions seeking recommendations which have a graphical user interface (GUI) and where a command-line interface (CLI) answer would be obvious but does not satisfy your needs.
303 questions
an Application Programming Interface (API), e.g. besides a graphical user interface (GUI), command-line interface (CLI) or web interface.
292 questions
Software to perform actions by itself without actively being supervised by a user.
286 questions
Software that can be used even if no Internet connection is available.
282 questions
Software feature that brings hard to comprehend information into an visual representation that can be human-readable.
280 questions
Software that interacts with a network of computers or other devices.
278 questions
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