Koa vs Ruby on Rails
Head-to-head usage across the sites we track.
Top sites by authority
Koa · Ruby on Rails · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
88
Open Page Rank 8+
0
1,419
Open Page Rank 7+
0
4,424
Open Page Rank 6+
0
7,483
Open Page Rank 5+
0
11,443
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Koa · Ruby on Rails · share of sites in each country using one or the other
United States
2
78,208
United Kingdom
2
31,164
India
3
29,980
Canada
2
27,669
Germany
2
23,967
France
2
23,963
Japan
1
20,165
Spain
3
20,107
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Koa | Ruby on Rails |
|---|---|---|
| LCP | 1.5 s | 1.7 s |
| INP | 87 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 650 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.