| golang.org/x/net/context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| google.golang.org/appengine | Package appengine provides basic functionality for Google App Engine. |
| google.golang.org/appengine/datastore | Package datastore provides a client for App Engine's datastore service. |
| google.golang.org/appengine/log | Package log provides the means of writing and querying an application's logs from within an App Engine application. |
| google.golang.org/appengine/user | Package user provides a client for App Engine's user authentication service. |
| html/template | Package template (html/template) implements data-driven templates for generating HTML output safe against code injection. |
| net/http | Package http provides HTTP client and server implementations. |
| time | Package time provides functionality for measuring and displaying time. |