Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Tilda is a web design tool.
Variti is a network security solutions firm that blocks bad bots, protects users from various automated abuse, attacks and fraud techniques.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.