"Did you mean...?" for GitHub is a browser extension developed by vantezzen. This free extension is available on the Chrome platform and falls under the category of Browsers, specifically Add-ons & Tools.

To enhance its functionality, you have the option to add a GitHub API token. By doing so, the extension will query the GitHub GraphQL API to filter out repositories that do not exist from the list of suggested names.

Please note that this extension requires certain permissions, such as "Read and change your data on github.com" for inserting the "Did you mean...?" list into the 404 page, and "storage" to save your GitHub API token. However, it does not collect or save any usage or other data about its users.

It's important to mention that this extension is not affiliated with GitHub.com in any way.