What package are available in Golang ?

Golang comes with a large standard library that provides many packages for a wide range of functionality, including:

fmt: formatting and printing of data

os: operating system functionality such as file I/O, environment variables, and process management

net: networking, including TCP/UDP, HTTP, and email protocols

http: web server and client functionality, including handling of HTTP requests and responses

json: encoding and decoding of JSON data

time: working with dates, times, and durations

math: mathematical operations, including constants, functions, and numerical types

sync: synchronization primitives for concurrent programming

crypto: cryptographic primitives, including hashing, encryption, and decryption

database/sql: a database/sql API for interacting with SQL databases

In addition to the standard library, there are many third-party packages available through the Go Package Index (https://pkg.go.dev/) for a wide range of functionality, including web frameworks, data visualization, and more.