Perl is a very 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 practical programming languages these days as it supports the use of modules - tiny parts of code with pre-defined subroutines that are employed to execute a particular task. The modules will save you lots of time and they can contribute to the fast loading speed of your websites as you'll be able to add just a single line of program code to call a certain module rather than using all of the program code for the task in your script. Perl is a multi-purpose language most often used for scripts, but it has been used to create a wide range of popular pieces of web software as well, for example cPanel, BugZilla and Movable Type. It is also employed on high-traffic websites for instance IMDB, Craigslist, Ticketmaster and many others.