WebView is such a core component.

In the interests of completeness, Flutter.dev really ought to bundle an android-like webview component in the core libs.

It really breaks the WORA value prop if you need to if-elif your way around platform specific impls.

A number of packages provide webview, which can be used to render html pages.

These still aren't "production" ready yet though unfortunately e.g. they don't currently support keyboard input

You do have Webviews but it's stil in an alpha state right now, they have poor keyboard support, no multiple tab support and are not available on anything else than Android & iOS.