X-blocker is a free Chrome add-on developed by Rudie Dirkx that allows users to block incoming content from the web. This add-on falls under the category of Browsers and is specifically categorized as an Add-ons & Tools.

With X-blocker, users have the ability to block any content from any URL they desire. The add-on provides the option to configure regular expressions to match the specific URLs that need to be blocked. For example, users can easily block all `nicescroll.js` scripts or any other content they wish to prevent from loading.

X-blocker is a useful tool for individuals who want to have more control over the content they encounter while browsing the web. By allowing users to block specific URLs, it provides a way to customize and enhance their browsing experience.

Please note that as a software reviewer, I am not able to provide personal opinions or contact information. This review is solely based on the information provided.