Bootstrap is a free and open-source front-end framework for designing websites and web applications. It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.
Gravatar is a service for providing globally unique avatars and was created by Tom Preston-Werner. It is owned by Automattic, having integrated it into their WordPress.com blogging platform.
Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.
Google Translate is a multilingual neural machine translation service developed by Google, to translate text, documents and websites from one language into another.
Optimizely is a website optimization platform providing A/B and multivariate testing with tools to track engagement, clicks, conversions, sign ups & more.
Trustpilot is a customer review management platform that helps online businesses to establish a trusted brand and connect with customers by collecting reviews and gathering feedback to improve customer experience, amplify their online presence, increase conversions and sales, and more.
Plesk is a commercial web hosting and server data center automation software with a control panel developed for Linux and Windows-based retail hosting service providers.
YouTube is a video sharing service where users can watch, like, share, comment and upload their own videos. The video service can be accessed on PCs, laptops, tablets and via mobile phones.