Quality of service module for Apache httpd
REXX interpreter
Automatically updates and applies certificate revocation lists
OpenID relying party for Apache httpd
Apache 2.4.x security, block known bad IP
Open Source PKI solutions
apache-2.x module to get userid from header|environment|SSL variable
Extended Server Pages (XSP/XSPD) for UNIX or Linux, C-based
Authentication, Access Control, and Single Sign-On
Free-SA is report generating tool for web, proxy and mail log files
My person Blog
mod_gnutls apache module
High-performance multithreaded web server
Overnet Millennium Server for Unix Linux