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+
0
65
Open Page Rank 8+
14
1,175
Open Page Rank 7+
48
4,610
Open Page Rank 6+
54
8,806
Open Page Rank 5+
64
15,365
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
213
130,630
Japan
79
92,821
Brazil
91
56,858
India
155
46,313
United Kingdom
117
46,044
France
187
42,093
Italy
120
38,753
Canada
115
35,702
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apereo CAS | Facebook Login |
|---|---|---|
| LCP | 1.6 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.