We now have webview support! This feature brings the operating systems webview directly into your applications and games by adding a transparent click through layer to support and access to the web API's.
The HTML/CSS/JS nodes are not restricted to only targeting the browser now and can be used in the RunT/Krom target and of course directly in the Blender 3D viewport. I have wanted a web browser in Blender 3D panel space editor since the first days of the blend4web!
Check out the new category and list of nodes in the latest commit: https://dev.leenkx.com/LeenkxTeam/LNXSDK/commit/f4b0bf1e931ea0671b398fa053ad8341717158d9
Build the RunT/Krom with the webview flag to test as the MacOS binary is the only one currently compiled into the SDK to give a try. Windows does not provide direct OS webview and requires linking the WebView2 lib and currently is not fully implemented so it will be updated soon in the sdk and RunT/Krom will enable the webview compile flag by default.