| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| 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/trillian/docs/storage/commit_log/simelection | Package simelection simulates a master election. |
| github.com/google/trillian/docs/storage/commit_log/simkafka | Package simkafka is a toy simulation of a Kafka commit log. |
| time | Package time provides functionality for measuring and displaying time. |