Fat-Free Framework vs Ruby on Rails
Head-to-head usage across the sites we track.
Top sites by authority
Fat-Free Framework · Ruby on Rails · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
89
Open Page Rank 8+
10
1,427
Open Page Rank 7+
16
4,476
Open Page Rank 6+
25
7,577
Open Page Rank 5+
36
11,599
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Fat-Free Framework · Ruby on Rails · share of sites in each country using one or the other
United States
271
77,772
United Kingdom
121
30,362
India
110
29,983
Canada
77
26,938
Germany
133
23,823
France
136
23,442
Japan
44
19,999
Brazil
70
19,111
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Fat-Free Framework | Ruby on Rails |
|---|---|---|
| LCP | 1.5 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 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.