Apache is a free and open-source cross-platform web server software.
Google PageSpeed is a family of tools designed to help websites performance optimisations.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
TYPO3 is a free and open-source Web content management system written in PHP.