React

As a foundational pillar in front-end development, Facebook’s React initiated a profound transformation in the web and mobile application worlds upon its release in 2013. It single-handedly democratized declarative, component-based UI design by migrating the craft from complex, direct DOM manipulation to a much more accessible, state-driven component architecture. This pivotal shift dismantled previous UI complexity and state management barriers, placing powerful, reusable UI-building tools into the hands of countless developers globally.