| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| crypto/md5 | Package md5 implements the MD5 hash algorithm as defined in RFC 1321. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| go.opencensus.io/stats | Package stats contains support for OpenCensus stats recording. |
| go.opencensus.io/stats/view | Package view contains support for collecting and exposing aggregates over stats. |
| go.opencensus.io/tag | Package tag contains OpenCensus tags. |
| gocloud.dev/blob/driver | Package driver defines interfaces to be implemented by blob drivers, which will be used by the blob package to interact with the underlying services. |
| gocloud.dev/gcerrors | Package gcerrors provides support for getting error codes from errors returned by Go CDK APIs. |
| gocloud.dev/internal/gcerr | Package gcerr provides an error type for Go CDK APIs. |
| gocloud.dev/internal/oc | Package oc supports OpenCensus tracing and metrics for the Go Cloud Development Kit. |
| gocloud.dev/internal/openurl | Package openurl provides helpers for URLMux and URLOpeners in portable APIs. |
| hash | Package hash provides interfaces for hash functions. |
| io | Package io provides basic interfaces to I/O primitives. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| log | Package log implements a simple logging package. |
| mime | Package mime implements parts of the MIME spec. |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |
| unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |