Free & Open Source Software (FOSS)

With Free & Open Source Software (FOSS), the underlying source code is freely available for anyone to download and use, as well as modify and share with others. Most successful FOSS projects have a community of developers and users who work together to improve the software, update documentation, and support each other. Thus, FOSS is described as free as in free speech, not free beer.

Popular FOSS projects include Linux (operating system), Apache (webserver), Chrome & Firefox (browsers), Java, Perl, PHP, & Python (programming languages), Drupal, Joomla, & WordPress (content management), Moodle (learning management), Trac & Redmine (project management), and many other widely used software tools.