Perl is a powerful programming language that is regularly used for generating CGI scripts and also a number of web-based applications. Among its key advantages is that it supports modules - ready-made batches of program code that are designed to do a variety of tasks and to increase the effectiveness of a certain script without slowing it with unnecessary lines of code. To put it simply, in the event that five jobs should be performed, you can employ five lines of code in order to call each one of the modules rather than adding a few hundred lines used to create the actual modules within your script. Perl is very handy and it can be used for a number of purposes, that's why a wide range of corporations have included it in their web products or on their resource-demanding websites - cPanel, IMDB, Craigslist, BugZilla, BBC and many more. It's commonly used with other languages such as PHP or Python.