IIS vs libwww-perl-daemon
Head-to-head usage across the sites we track.
Top sites by authority
IIS · libwww-perl-daemon · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
50
0
Open Page Rank 8+
1,251
0
Open Page Rank 7+
4,874
0
Open Page Rank 6+
9,276
0
Open Page Rank 5+
15,469
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
IIS · libwww-perl-daemon · share of sites in each country using one or the other
United States
114,450
1
India
56,424
0
United Kingdom
41,553
0
Italy
38,779
0
Brazil
33,870
1
Canada
30,741
0
Türkiye
30,712
0
Germany
30,381
0
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | IIS | libwww-perl-daemon |
|---|---|---|
| LCP | 1.6 s | 1.2 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Oct 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.