encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
errors | Package errors implements functions to manipulate errors. |
fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
io | Package io provides basic interfaces to I/O primitives. |
net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
net/rpc | Package rpc provides access to the exported methods of an object across a network or other I/O connection. |
sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |