The website help.salesforce.com is built with 6 technologies.
UI frameworks
Bootstrap
Websites built with BootstrapBootstrap 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.
Tag managers
Google Tag Manager
Websites built with Google Tag ManagerGoogle 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.
Security
HSTS
Websites built with HSTSHTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Cookie compliance
OneTrust
Websites built with OneTrustOneTrust is a cloud-based data privacy management compliance platform.
Miscellaneous
Open Graph
Websites built with Open GraphOpen Graph is a protocol that is used to integrate any web page into the social graph.
CRM
Salesforce Desk
Websites built with Salesforce DeskSalesforce Desk(Desk.com) is software as a service (SaaS) tool on the help desk.