A WebView is a web browser that is embedded within an app. Thus, a WebView is a large-scale software component that enables the use of web content within apps. In some cases, the entire functionality of the app is implemented this way.
The prominent ones are bundled in operating systems:
Android System WebView, based on Google Chrome Apple's WebView for its devices, based on its Safari browser Microsoft Edge WebView2
Other examples are Microsoft's legacy WebView, based on its deprecated EdgeHTML and MSHTML engines, and the WebView component in JavaFX.
See also
References
External links Build web apps in WebView | Android Developers