- Hydrogen\Http\Request - A class to represent a http request.
- Hydrogen\Http\Response - A class to represent a http response.
- AbstractController - An abstract class which application controllers should extend.
- Router - A class to route a uri to an action within a controller.
- AbstractView - An abstract class which view classes should extend.
- HtmlView - A view class for rendering HTML templates.
- JsonView - A view class for rendering JSON data.