Like Bing (or Google, but 'G' + 'Google' is already taken by somebody called Google) but for Go.
Ging is a search tool for GoDoc. You can use Ging to look up inside each package available in GoDoc. Right now only a small set of packages are indexed, but everybody can add a package to the index.
Right now Ging is accessible at http://ging.ngrok.com, but It's temporal.
Ging uses bleve for indexation and Leveldb for storage. The http layer is written with help of gorilla/websocket to implement auto-completion.