As of October 9, 2026, Facebook Login is used by 1,045,489 websites in the TechLeads index: 90.3% of all Login detections, the 1st most-used of 38 Login technologies.
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Citation
TechLeads. "Facebook Login Customers and Market Share." Data as of October 9, 2026. https://techleads.fyi/technology/facebook-login/market-shareHTML link
<a href="https://techleads.fyi/technology/facebook-login/market-share">Facebook Login market share (TechLeads data)</a>Websites using each technology in the TechLeads index, and its share of all Login detections.
| # | Technology | Websites | Share |
|---|---|---|---|
| 1 | Facebook Login | 1,045,489 | 90.3% |
| 2 | Sign In With Google | 38,765 | 3.3% |
| 3 | Keycloak | 30,217 | 2.6% |
| 4 | Okta | 10,720 | 0.93% |
| 5 | Clerk UMP | 7,539 | 0.65% |
| 6 | Microsoft Authentication Library for JavaScript | 5,916 | 0.51% |
| 7 | ClassLink |
In HTTP Archive's monthly crawl of public websites, Facebook Login was detected on 1,887,184 pages in September 2026, down 26.8% from a year earlier (peak: 4,851,081). Among the 1,000 most-visited sites, it appeared on 80. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.
Same month, other Authentication technologies in HTTP Archive: Google Sign-in 545,296, NextAuth.js 84,936, Apple Sign-in 51,541, Linkedin Sign-in 44,214, Clerk 28,894.
Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.
See all 1,045,489 websites using Facebook Login or download the full list as a CSV for $29.
TechLeads scans public websites and detects Facebook Login from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Facebook Login's website count divided by the website counts of all Login technologies we track; a site using two Login tools counts for both. Counts were last refreshed on October 9, 2026 and update daily.
| 5,017 |
| 0.43% |
| 8 | Login with Amazon | 2,908 | 0.25% |
| 9 | Oxi Social Login | 2,565 | 0.22% |
| 10 | Auth0 | 2,519 | 0.22% |
| 11 | LINE Login | 1,756 | 0.15% |
| 12 | Gigya | 936 | 0.08% |
| 13 | MTCaptcha | 538 | 0.05% |
| 14 | AgeVerify | 400 | 0.03% |
| 15 | AgeChecker.Net | 371 | 0.03% |
| 16 | Loginza | 364 | 0.03% |
| 17 | LoginRadius | 346 | 0.03% |
| 18 | Mosyle | 310 | 0.03% |
| 19 | SheerID | 258 | 0.02% |
| 20 | Janrain | 224 | 0.02% |
| 21 | Persona Identity | 168 | 0.01% |
Rows link to each competitor's market share page where one exists. The table lists the 21 most-used technologies; ranks are by website count.