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Auth0 vs Facebook SDK: who uses which

Facebook SDK is on more sites: 832,052 against 1,013 for Auth0, about 821.4 times as many. Here's how they compare across the websites we've indexed, and where each one does best.

Where each one is used

DomainAuth0Facebook SDK
.com on .com716360,460
.jp in Japan636,756
.org on .org4531,261
.cz in Czechia029,089
.pl in Poland024,986
.net on .net2624,148
.vn on .vn023,363
.it in Italy317,260

79 sites run both at once.

Questions

Which is more popular, Auth0 or Facebook SDK?

Facebook SDK is on more sites: 832,052 against 1,013 for Auth0, about 821.4 times as many, across the sites StackGrep has indexed.

Do sites use Auth0 and Facebook SDK together?

79 sites load both. That's often a switch in progress, or two teams picking different tools.

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