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
94
Open Page Rank 8+
9
1,449
Open Page Rank 7+
14
4,617
Open Page Rank 6+
23
7,815
Open Page Rank 5+
34
11,919
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
309
83,667
United Kingdom
137
33,120
India
128
32,385
Canada
89
29,524
France
172
26,676
Germany
164
26,112
Japan
59
22,820
Spain
96
20,851
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Fat-Free Framework | Ruby on Rails |
|---|---|---|
| LCP | 1.6 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, 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.