X Remark is a Chrome extension developed by SHΞNLU, available for free in the Browsers category under Add-ons & Tools. This program enables users to add remarks to X users, displaying these remarks on the user's profile card, homepage, and tweets. This feature aids users in identifying X users to whom they have added remarks.

All information in X Remark is stored locally within the browser's storage, ensuring data privacy. The program processes data locally, eliminating the need for any network requests. Users are advised to securely manage their data and perform regular backups to prevent data loss, as recovery is not possible once data is lost.