| 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/nats-io/gnatsd/auth | |
| github.com/nats-io/gnatsd/logger | Package logger provides logging facilities for the NATS server |
| github.com/nats-io/gnatsd/server | Package sublist is a routing mechanism to handle subject distribution and provides a facility to match subjects from published messages to interested subscribers. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| net/url | Package url parses URLs and implements query escaping. |
| os | Package os provides a platform-independent interface to operating system functionality. |