Calendly is an app for scheduling appointments, meetings, and events.
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.
Linkedin Ads is a paid marketing tool that offers access to Linkedin social networks through various sponsored posts and other methods.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Tilda is a web design tool.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.