Qii-U-Blocker is a free Chrome browser add-on developed by standard.software.net. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools program.

This handy extension allows users to hide selected Qiita users, effectively blocking their articles and comments from appearing on the Qiita page. By simply clicking on the hidden area, users can reveal the content and review it if desired. Qii-U-Blocker provides the option to toggle whether a user should be blocked or not on the user interface.

With Qii-U-Blocker, users can have more control over their Qiita experience by customizing the content they see, making it a useful tool for those who prefer to filter out specific users' contributions.