| conio.h | C Console IO Library |
| ctype.h | C/C++ Ctype Library |
| curl/curl.h | High Level Socket Library |
| dirent.h | Unix Directory Library |
| fstream.h | C++ File Handling Library |
| iostream.h | C++ IO Library |
| math.h | C/C++ Mathematics Library |
| mysql/mysql.h | C MySQL API Reference. |
| stdio.h | C Standard IO Library |
| stdlib.h | C Standard Library. (cstdlib in c++) |
| string.h | C/C++ String Library |
| sys/socket.h | Unix Socket Library |
| winsock2.h | Windows Socket Library |