GLib

GLib, short for GNOME Low-Level Core Library, is a general-purpose utility library developed by the GNOME Project and first released in the late 1990s. It provides core data structures, portability wrappers, event handling, and system utilities that sit below graphical toolkits such as GTK. GLib is used extensively in Linux desktop environments, system services, networking software, and cross-platform C applications.

ML (Meta Language)

ML (short for Meta Language) is a functional programming language created by Robin Milner and colleagues at the University of Edinburgh in 1973. It is primarily used for theorem proving, compilers, formal verification, and research in programming language design. Developers can access ML by downloading implementations such as MLton or SML/NJ, which provide compilers, libraries, and documentation for Windows, macOS, and Linux platforms.

QML: Qt Modeling Language

QML, short for Qt Modeling Language, is a declarative language designed for building dynamic, fluid, and interactive user interfaces, primarily within the Qt framework. It is widely used in desktop, embedded, and mobile applications for defining UI components, animations, and responsive layouts. Developers can use QML by installing the Qt SDK from the official Qt website, which includes the QML engine, documentation, and tooling for Windows, macOS, and Linux platforms.