gunicorn vs IIS
Head-to-head usage across the sites we track.
Top sites by authority
gunicorn · IIS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
12
61
Open Page Rank 8+
138
1,315
Open Page Rank 7+
290
5,213
Open Page Rank 6+
431
9,906
Open Page Rank 5+
574
16,556
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
gunicorn · IIS · share of sites in each country using one or the other
United States
3,010
136,825
India
1,416
68,343
United Kingdom
1,415
49,161
Italy
947
46,831
Brazil
1,092
38,951
Germany
1,155
36,200
Türkiye
623
36,724
Canada
1,062
36,284
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | gunicorn | IIS |
|---|---|---|
| LCP | 1.8 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.