| Number | Core Modules | Description |
| 1 | HTTP | This will includes classes, methods and event to create a Node.js HTTP server. |
| 2 | util | This will includes some useful utility functions which are useful for developers. |
| 3 | fs | This will includes events, classes and methods to deal with file I/O operations. |
| 4 | URL | This will includes methods for URL parsing. |
| 5 | QueryString | This will includes methods to work with querystring. |
| 6 | Stream | And this will inlcudes methods to handle streaming data. |
| 7 | Zlib | This will includes methods to compress or decompress files. |