WhatsApp Business Chat is the more common of the two in our index: it runs on 2,963 websites against 19 for Provide Support. Counts come from real scans of each site's home page, not vendor claims, and cover the sites in TechLookup's index rather than the whole web.
Provide Support is a SaaS for customer service that includes live chat, real-time website monitoring, chat statistics.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.
Within the live chat sites we have indexed, Provide Support holds 0.1% and WhatsApp Business Chat 15%.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.