SPARQL (pronounced "sparkle", a recursive acronym for SPARQL Protocol and RDF Query Language) is a set of specifications by W3C that provide languages and protocols to query and manipulate RDF graph content on the Web or in an RDF store.

VHDL (VHSIC Hardware Description Language) is a language used in electronic design to describe digital systems such as FPGA (field-programmable gate arrays) and IC (integrated circuits).

Apache ActiveMQ is an open source (Apache 2.0 licensed) message broker which fully implements the Java Message Service 1.1 (JMS). It provides "Enterprise Features" like clustering, multiple message stores, and ability to use any database as a JMS persistence provider besides VM, cache, and journal persistency.

Config files configure the initial settings for some computer programs

Use this tag only for questions directly related to changes in version 4 of Apple's Swift programming language. Use the tag [swift] for more general language questions, or the tags [ios], [cocoa], [apple-watch] etc. for questions about developing on Apple platforms.

Either relates to Home Screen widgets, or to general UI elements used on an Android Application screen.

A slice is a representation of a part of a sequence, usually defined by a reference to the underlying sequence, an index giving the starting position, a length or end position, and optionally a "stride" or "step" value. Please use the tags "object-slicing" for the slicing problem in C++ and "program-slicing" for the analysis technique.

Apache Maven is a software project management and comprehension tool. This is a tag for Maven related questions that are specific to Maven versions 2.x.

PrestaShop is a free and open-source e-commerce storefront/shopping cart solution based on PHP, the Smarty templating engine, Symfony and MySQL.

Use this tag for questions regarding DOM use and bindings of React Router v4, v5, and v6.

Generic term for "Instant Messaging System". It can also represent a discussion that occurs in an Instant Messaging System.