| 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. |
| github.com/golang/glog | Package glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup. |
| github.com/google/certificate-transparency-go/submission | Package submission contains code and structs for certificates submission proxy. |
| github.com/google/trillian/monitoring/prometheus | Package prometheus provides a Prometheus-based implementation of the MetricFactory abstraction. |
| github.com/prometheus/client_golang/prometheus/promhttp | Package promhttp provides tooling around HTTP servers and clients. |
| log | Package log implements a simple logging package. |
| net/http | Package http provides HTTP client and server implementations. |
| time | Package time provides functionality for measuring and displaying time. |