"twitter memo" is a Chrome extension developed by whdcks987, available for free in the Browsers category under Add-ons & Tools. This program allows users to track anyone on Twitter and make notes on their profile. With an immutable internal identifier, users can add memos to Twitter profile pages, ensuring the notes remain valid even if the user changes their Twitter handle.

The extension offers several key features. Users can seamlessly add memos to view on Twitter profile pages and access a convenient popup page for quick memo management. The popup page enables users to add, view, and delete memos, as well as browse a comprehensive list of written memos and their corresponding IDs. Additionally, users can easily navigate to profile pages with a simple button click.