Unit test library for React. It is developed by Airbnb. It can be used with other JavaScript testing frameworks like Mocha, Jest, Karma, etc.

The scale tag is mostly used for questions that relate to proportional resizing of images or UI elements. It is also used for questions related to function scale() in R language.

Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Windows 10 UWP, and Xamarin Forms.

Questions about calculators, or calculator programming. For TI-BASIC calculator programming, use the ti-basic tag.

This tag refers to the process of replacing a particular system with a newer version of the same system

Boost.Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.

Google Tag Manager (GTM) is a free Tag Manager solution for web or mobile. It automates the management of JavaScript code sequences which are used to send 'tags' from your website or mobile app to third parties. Supported tags include those from Google and DoubleClick (Google Analytics and DoubleClick Floodlight Sales, for example), and selected 'Certified Vendor' tags.

Inversion of control (IoC) is an abstract principle describing an aspect of some software architecture designs in which the flow of control of a system is inverted in comparison to procedural programming.

Use this tag for PostGIS, which is a spatial database extension for PostgreSQL. Before using this tag, please consider whether your question might be a better fit for the Geographic Information Systems Stack Exchange site (e.g. if it's more about configuration or geodetic principles than about actual programming).

For questions about emulation and emulators, where a computer program is emulating (imitating) the behavior of another program or hardware device.

multipart/form-data is a content type used to send forms to web services, including file uploads.