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+
8
1,416
Open Page Rank 7+
14
4,432
Open Page Rank 6+
24
7,466
Open Page Rank 5+
35
11,430
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
263
78,208
United Kingdom
121
31,164
India
107
29,980
Canada
81
27,669
France
141
23,963
Germany
134
23,967
Japan
48
20,165
Spain
86
20,107
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, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.