Apache is a free and open-source cross-platform web server software.
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.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
Unix is a family of multitasking, multiuser computer operating systems.