| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/golang/glog | Package glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup. |
| github.com/google/certificate-transparency-go/client | Package client is a CT log client implementation and contains types and code for interacting with RFC6962-compliant CT Log instances. |
| github.com/google/certificate-transparency-go/jsonclient | Package jsonclient provides a simple client for fetching and parsing JSON CT structures from a log. |
| github.com/google/certificate-transparency-go/scanner | Package scanner holds code for iterating through the contents of a CT log. |
| github.com/google/certificate-transparency-go/trillian/migrillian/core | Package core provides transport-agnostic implementation of Migrillian tool. |
| github.com/google/trillian | Package trillian contains the generated protobuf code for the Trillian API. |
| google.golang.org/grpc | Package grpc implements an RPC system called gRPC. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| net/http | Package http provides HTTP client and server implementations. |
| time | Package time provides functionality for measuring and displaying time. |