There are several utility modules available in Node.js module library. These modules are very common and are frequently used while developing any Node based application.
||Module Name & Description
||OS ModuleProvides basic operating-system related utility functions.
||Path ModuleProvides utilities for handling and transforming file paths.
||Net ModuleProvides both servers and clients as streams. Acts as a network wrapper.
||DNS ModuleProvides functions to do actual DNS lookup as well as to use underlying operating system name resolution functionalities.
||Domain ModuleProvides ways to handle multiple different I/O operations as a single group.