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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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when looking for recommendations for software/web-apps that analyze/create/use CSS (cascading style sheets)
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explicitly for the MySQL database (server or client). Targeting "any" database, rather use the 'database' tag.
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Data Analysis tools enable you to take a set of data and extract abstract information out of them.
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when asking questions relating to optical character recognition software.
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an open source distributed version control system originally designed and written by Linus Torvalds.
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Visually representing any concept, emotion, or item. Drawings can be generated by humans, animals, or computers.
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when asking for recommendations concerning remote access software and remote access clients.
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Software that uses, manipulates, or creates a three-dimensional space.
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When seeking recommendations for software that interacts with the World Wide Web. This is not for seeking recommendations for web sites.
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Software specifically for Windows 8. Please tag with [windows] instead unless your question involves functions specific to Windows 8.
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Stream of debugging-information from a program, usually with timestamp and other meta information. Use when you want to analyze, display or otherwise interact with log files / streams.
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For questions asking for game recommendations meeting specific criteria.
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when asking for image editing software. When asking questions using this tag ensure that you include information relating to the formats you want support for and the key features you requ…
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The process of storing, processing and accessing data and information.
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when asking for software that monitors network traffic, intrusions and connection stability (amongst others).
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Use this when you're looking for a library or application written for the JavaScript engine Node.js.
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graphical representation of data. Charts can help you visualize vast amounts of data in a way that is easily understood.
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for recommendations related to download managers and accelerators.
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Software for recording screen and audio activity on your computer, such as recording software demonstrations and game play in games.
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when seeking recommendations for email clients. An email client is any program used to view email.
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Software required for a computer to enable it for delivering content from a private or public website.
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where interaction with mobile devices plays a central role (e.g. Making calls, checking messages, displaying content)
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if you're looking for either an application which can or should store its data in the cloud or if you're looking for a server-side software providing cloud-based storage.
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Software that transmits audio or video, or both, over the internet.
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Software that reads or modifies XML content.
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when including markdown as a feature requirement when seeking a recommendation.
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Converting office documents between different formats (e.g. MS-Word to ODT, or PDF to HTML). For media conversion, please use the 'media-converter' tag instead.
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For recommendations for software that interoperates with the Microsoft Excel spreadsheet software.
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Structured Query Language - a language designed for interacting with databases.
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when seeking recommendations for software that can capture the entire screen, or specific areas of the screen, to an image file or online cloud storage.
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if you're looking for a wiki implementation/engine, converters between different wiki syntaxes, wiki plugins, or similar wiki-related software.
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manage changes to documents, computer programs, large web sites, and other collections of information.