Covfefe is a free Chrome add-on developed by Corey Gwin. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. With Covfefe, users can easily edit their old tweets by simply clicking on the "Edit" button. This add-on provides a convenient way to make corrections or updates to previously posted tweets.

One of the notable features of Covfefe is its ability to delay tweets for 15 seconds before they are actually posted. This allows users to review and edit their tweets before they are seen by others, helping to prevent any embarrassing or incorrect information from being shared. To start using Covfefe, users need to connect their Twitter account by clicking on the Covfefe icon in their toolbar.

Covfefe is a useful tool for those who frequently use Twitter and want to have the option to make changes to their tweets or double-check them before they are published. It provides a simple and effective way to ensure tweet accuracy and avoid any potential mistakes or regrets.