Apereo CAS vs Facebook Login
Head-to-head usage across the sites we track.
Top sites by authority
Apereo CAS · Facebook Login · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
64
Open Page Rank 8+
14
1,137
Open Page Rank 7+
45
4,414
Open Page Rank 6+
51
8,439
Open Page Rank 5+
61
14,695
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Apereo CAS · Facebook Login · share of sites in each country using one or the other
United States
194
115,038
Japan
60
80,242
Brazil
82
50,577
India
139
40,025
United Kingdom
99
39,812
France
156
35,047
Italy
94
33,452
Canada
98
30,466
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apereo CAS | Facebook Login |
|---|---|---|
| LCP | 1.5 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.