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Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
Tengine is a web server which is based on the Nginx HTTP server.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.