Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Contact Form 7 is an WordPress plugin which can manage multiple contact forms. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering.
Query Migrate is a javascript library that allows you to preserve the compatibility of your jQuery code developed for versions of jQuery older than 1.9.
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.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
Slider Revolution is a flexible and highly customisable slider.
Instagram Feed displays Instagram posts from your Instagram accounts, either in the same single feed or in multiple different ones. Created by Smash Balloon.
Configurable JavaScript/CSS spinner that can be used as a resolution-independent loading indicator
Think Up Themes Consulting is a multipurpose WordPress theme that is available for free download and also offers a pro version.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
WPBakery is a drag and drop visual page builder plugin for WordPress.