Facebook customer chat SDK.
https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin/sdk
Widgets · Live Chat
Get access to data on 492,305 websites that are Facebook Customer Chat SDK Customers. We know of 140,294 live websites using Facebook Customer Chat SDK and an additional 352,011 sites that used Facebook Customer Chat SDK historically and 63,384 websites in the United States.
Get a list of 492,305 websites using Facebook Customer Chat SDK which includes location information, hosting data, contact details, 140,294 currently live websites and an additional 96,184 domains that redirect to sites in this list. 352,011 sites that used this technology previouslyand 63,384 websites in the United States currently using Facebook Customer Chat SDK.
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