Stencil is a compiler developed by the Ionic team for generating web components, allowing them to be used independently, integrated into Stencil applications, or within Ionic progressive web apps. Although reminiscent of frameworks like React and Angular, Stencil is not classified as one. It leverages TypeScript to write components, which are then compiled into different JavaScript versions to suit various browser scenarios, similar to Angular's Differential Loading. Stencil supports JSX, enabling familiar development patterns for those experienced with React or Angular. Its components are lightweight, requiring no runtime, and are compatible with all major browsers except older versions of Edge. The library facilitates the creation of isolated, reusable components through shadow DOM and offers tools such as an integrated development server, testing suite, and doc generator. Additionally, Stencil supports lifecycle methods, event handling, and reactivity through decorators like @Method and @Watch, while allowing the development of dumb components using functional approaches. The main user base includes the Ionic framework, which builds all its UI components with Stencil, and the platform is praised for its ease of learning, comprehensive documentation, and alignment with web standards.