Facebook customer chat SDK.
https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin/sdk
Widgets · Live Chat
Get access to data on 491,735 websites that are Facebook Customer Chat SDK Customers. We know of 139,033 live websites using Facebook Customer Chat SDK and an additional 352,702 sites that used Facebook Customer Chat SDK historically and 63,040 websites in the United States.
Get a list of 491,735 websites using Facebook Customer Chat SDK which includes location information, hosting data, contact details, 139,033 currently live websites and an additional 95,124 domains that redirect to sites in this list. 352,702 sites that used this technology previouslyand 63,040 websites in the United States currently using Facebook Customer Chat SDK.
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