HubStar is the missing "star" feature for GitHub repositories. You can already star Gists, so why not repositories?
How does it work?
After signing in to HubStar with your GitHub account and installing a browser extension, you'll notice a new button next to the fork and watch button on any GitHub repository page:
The new star button works just like the fork and watch buttons you're used to using on GitHub. Click the star to remember it for later, click it again to forget it.
Security & Privacy
On GitHub repository pages, the HubStar browser extension makes a
to HubStar's servers, passing along the URL of the currently viewed repository.
It will only do this on public repositories. No information regarding
private repositories is ever sent to external servers, or even read by the
Further, the source for the entire site, including the browser extensions, is available on GitHub.
© 2012 Robert Speicher, released under the MIT license. See
Star icons used on the HubStar site created by Everaldo Coelho, licensed under the GPL.
Star icon used in the browser extension from the Silk icon package, licensed under the Creative Commons Attribution 2.5 license.
Contributions are welcome, both to the site and browser extensions.
Fork the project, make your changes and send a pull request here on GitHub.