mod_ssl vs OpenSSL

OpenSSL is the more common of the two in our index: it runs on 330 websites against 13 for mod_ssl, and 13 sites use both. Counts come from real scans, not vendor claims.

mod_ssl: 13
OpenSSL: 330

mod_ssl

mod_ssl is an optional module for the Apache HTTP Server. It provides strong cryptography for the Apache web server via the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) cryptographic protocols by the help of the open-source SSL/TLS toolkit OpenSSL.

Indexed sites: 13
Share of Web server extensions: 3%

Well-known sites using it

All 13 sites

OpenSSL

OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.

Indexed sites: 330
Share of Web server extensions: 79%

Well-known sites using it

All 330 sites

Used together

13 sites run both mod_ssl and OpenSSL. That is 100% of the sites using mod_ssl, the smaller of the two.

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Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.