IDK why this is being downvoted, it was indeed published two year ago, they just apparently repackaged this as an easier-to-use tool:
https://arxiv.org/abs/1903.07291
Saying that is repackaging something into an easier-to-use tool seems like quite a stretch. They didn't put a GUI on curl or something.
I don't think a GUI for curl would be as easy as you imagine. Curl has a lot of power with all the options and protocols it supports.
Here's an image of a wget gui. It's not quite a browser, interesting to look at nonetheless.