Facebook customer chat SDK.
https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin/sdk
Widgets · Live Chat
Get access to data on 495,409 websites that are Facebook Customer Chat SDK Customers. We know of 142,378 live websites using Facebook Customer Chat SDK and an additional 353,031 sites that used Facebook Customer Chat SDK historically and 64,885 websites in the United States.
Get a list of 495,409 websites using Facebook Customer Chat SDK which includes location information, hosting data, contact details, 142,378 currently live websites and an additional 100,168 domains that redirect to sites in this list. 353,031 sites that used this technology previouslyand 64,885 websites in the United States currently using Facebook Customer Chat SDK.
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