Apache is a free and open-source cross-platform web server software.
Fedora is a free open-source Linux-based operating system.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Mod_perl is an optional module for the Apache HTTP server. It embeds a Perl interpreter into the Apache server. In addition to allowing Apache modules to be written in the Perl programming language, it allows the Apache web server to be dynamically configured by Perl programs.
OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.
Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.