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…
2226 questions
Software to run on the Linux operating system.
Software to run on, or interact with, the Android operating system. For questions specifically asking for Android apps, please also tag the question with [android-app]. For non-recommendation question…
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.
1298 questions
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.
854 questions
Software regarding JavaScript libraries, frameworks, and plugins, as well as JavaScript software development tools.
824 questions
Software that manipulates PDF (Portable Document Format) files: converting to/from PDF, printing, editing, assembling, splitting, etc.
Software regarding Java development tools and libraries for the Java programming language.
686 questions
Software tools used during the development of other software.
625 questions
Software to create, manage, or interact with databases or software related to databases. For specific databases, please use the corresponding specific tag (see wiki).
622 questions
Software to create, read, record, or manipulate video.
Software to run on Apple's OS X operating system.
571 questions
Software related to the C++ programming language, including development environments, editors, compilers, analyzers, and libraries.
563 questions
Software to create, read, record, or manipulate audio.
489 questions
Software tools used during the development of web-apps or websites.
488 questions
Software to manage files stored on device(s), network(s), and/or in the cloud.
481 questions
Software related to HTML, the main markup language used to create web pages.
474 questions
Software for handling images and graphics, including creating, editing, converting, organizing, and printing.
466 questions
Software specifically for Windows 7. Please tag with [windows] instead unless your question involves functions specific to Windows 7.
454 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…
435 questions
Web browser software and web browser add-ons. If you are specifically looking for a Firefox or Chrome add-on/extension/plugin, please use the tag [firefox] or [chrome] instead.
412 questions
Libraries in C# and software to develop C# programs.
403 questions
Software to read/write/manage emails (client-side), or to process them (server-side).
376 questions
Integrated development environments (IDEs) for, libraries to use with, or products based upon the PHP language.
350 questions
Extensions or programs that work with Google's Chrome web browser.
350 questions
When one of the software requirements is an Application Programming Interface (API), e.g. besides a graphical user interface (GUI), command-line interface (CLI) or web interface.
347 questions
Software to edit text. Also consider the `html-editor` tag, if appropriate.
346 questions
Software which has a graphical user interface (GUI) and where a command-line interface (CLI) answer would be obvious but does not satisfy your needs.
337 questions
Software specifically for Windows 10. Please tag with [windows] instead unless your question involves functions specific to Windows 10.
329 questions
Software to perform actions by itself without actively being supervised by a user.
321 questions
Software that can be used even if no Internet connection is available.
317 questions
Software to be used from the command-line or in shell scripts.
317 questions
Software that manipulates, enhances, or converts images.
309 questions
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