Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.

Google Maps is a web mapping service. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets, real-time traffic conditions, and route planning for traveling by foot, car, bicycle and air, or public transportation.

Freshworks CRM is a cloud-based customer relationship management (CRM) solution. Key features include one-click phone, sales lead tracking, sales management, event tracking and more.

Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.

Varnish is a reverse caching proxy.

Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.

Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds.

Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality.

Apache is a free and open-source cross-platform web server software.

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.

PHP is a general-purpose scripting language used for web development.

YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.

Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.

Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface.

Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

OWL Carousel is an enabled jQuery plugin that lets you create responsive carousel sliders.

Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.

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.

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.

Modernizr is a JavaScript library that detects the features available in a user's browser.

Contact Form 7 is an WordPress plugin which can manage multiple contact forms. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering.

Chart.js is an open-source JavaScript library that allows you to draw different types of charts by using the HTML5 canvas element.

Underscore.js is a JavaScript library which provides utility functions for common programming tasks. It is comparable to features provided by Prototype.js and the Ruby language, but opts for a functional programming design instead of extending object prototypes.

WPBakery is a drag and drop visual page builder plugin for WordPress.

MySQL is an open-source relational database management system.