Calendly is an app for scheduling appointments, meetings, and events.
Gatsby is a React-based open-source framework with performance, scalability and security built-in.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
React is an open-source JavaScript library for building user interfaces or UI components.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.