That's a nitter instance.
Also, most of the instances using nitter is listed on this page if one ever stops working. Some even have RSS turned on.
https://github.com/zedeus/nitter/wiki/Instances
There are browser extensions that will change Twitter or X links to a nitter instance automatically, also, Google Chrome and Microsoft Edge, Firefox, iPhone, etc installable from their official stores
The list is here:
https://github.com/zedeus/nitter/wiki/Extensions