Perl is a popular programming language, which is used to make various web apps and CGI scripts. A lot of programmers consider it to be among the most efficient languages nowadays since it supports the usage of modules - tiny pieces of program code with pre-defined subroutines that are designed to perform a particular task. The modules can save you a lot of time and they will contribute to the quick speed of your sites since you're able to include only one line of code to call a specific module rather than using all the program code for the task in your script. Perl is a multi-functional programming language often used for scripts, but it's been employed to generate a wide range of popular pieces of web software as well, for instance cPanel, BugZilla and Movable Type. It is also employed on high-traffic websites including IMDB, Craigslist, Ticketmaster and many more.