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 - [reCaptcha](https://github.com/spbriggs/recaptcha-plugin) - YOURLS plugin implementing reCaptcha for unauthenticated users in your public interface.
 - [Redirect Index](https://github.com/tomslominski/yourls-redirect-index) - Redirect the user to another site if they go to the base directory of your YOURLS installation.
+- [Referral Link Checkpoint](https://github.com/telepathics/yourls-ref-checkpoint) - Add a landing page to let visitors know when it is a referral link.
 - [Regenerate URL](https://github.com/TheLeonKing/yourls-api-regenerate-url) - Regenerate a new keyword for a URL that has already been shortened.
 - [Remove The Share Function](https://github.com/seandrickson/YOURLS-Remove-the-Share-Function) - Remove the Share button and box that toggles the sharing options on the Admin page.
 - [Remove YouTube Play Indicator](https://github.com/UltraNurd/youtube-play-indicator) - Removes the triangle from the title of Youtube shortened URL.