mod_jk vs OpenSSL

Head-to-head usage across the sites we track.

Top sites by authority

mod_jk · OpenSSL · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

mod_jk · OpenSSL · share of sites in each country using one or the other

United States 2,086

29,654

Japan 732

22,526

India 922

16,898

Brazil 622

12,786

South Korea 2,059

11,243

Germany 723

11,844

Italy 974

11,018

United Kingdom 702

11,237

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All mod_jk sites · All OpenSSL sites