Perl is a well-liked scripting language that's considered to be one of the most practical languages in the online world. It's feature-rich and it's used to create various web-based applications and CGI scripts. What distinguishes Perl from most of the alternative languages on the web is the compatibility with modules - groups of commands for a specific job which can be integrated into a script by simply calling them which means that you're able to write only one line inside your script to have a module executed, rather than having the entire program code which is already a part of the module anyway. Because Perl can be used with numerous other programming languages and it provides a lot of functions depending on what a particular app can do, it's used by numerous well-known companies - the BBC, Craigslist, The Internet Movie Database (IMDB), cPanel, etcetera.