Linux HTTP Servers

Apache mod_ssl module to support open SSL (Secure Socket Layer)
Apache JAVA Projects- Jserv: Java servelet engine
Apache auth_ldap - support for LDAP over SSL, and a mode that lets Microsoft Frontpage clients manage their web permissions while still using LDAP for authentication.
Apache mod_atrack - module adds advanced user tracking functionality. It reduces the annoyance of sending multiple cookies to a single user and allow more intelligent analysis of collected data.
Apache mod_auth_ldap module allows Apache to authenticate users against an LDAP directory.
mod_auth_ldap for Netscape or OpenLDAP servers (Good HowTo)
Apache mod_backhand module for cluster load balancing
Apache mod_cgisock module to 'cut loose' the CGI script from Apache memory space
Apache mod_color module performs text file syntax coloring of source files. Preconfigured for C/C++ ("c-source"), yacc/bison ("yacc-source"), lex/flex ("lex-source") and perf/gperf ("perf-source").
Apache mod_dav module enables Apache to understand the "Distributed Authoring and Versioning" (DAV) protocol (extensions to HTTP) defined by RFC 2518. DAV is intended to replace proprietary authoring protocols such as those used by Frontpage or NetObjects' Fusion, but is also a complete set of protocols for manipulating a webserver's files and directories, and their properties.
Apache mod_dynvhost module for dynamic virtual hosting on the fly.
Apache mod_fastcgi module to provide high performance and cgi persistence without the limitations of server specific APIs.
Apache mod_hosts_access module allows you to use hosts.allow and hosts.deny files to configure access to your Apache webserver.
Apache mod_jive module to "jive" coresponding text and html pages.
Apache mod_log_spread module to provide an interface for spread to multicast access logs. Solves the problem of collecting consolidated access logs for large web farms.
Apache mod_ntlm module to authenticate against NTLM (used in Microsoft based Intranets. Password validation is done through Windows NT or Samba machines over TCP/IP.
Apache mod_perl module is a persistent PERL interpreter embedded in the server which avoids the overhead of starting an external interpreter and the penalty of Perl start-up time.
Apache mod_proxy_add_forward.c module that allows you to get the client IP back on the proxied host.
Apache mod_roaming module allows you to use the Apache webserver as a Netscape Roaming Access server. This allows you to store you Netscape Communicator 4.5 preferences, bookmarks, address books, cookies etc. on the server so that you can use (and update) the same settings from any Netscape Communicator 4.5 that can access the server.
Apache mod_text module to rewrite legacy ASCII text into limited HTML. It will recognize most URLs (both explicit and implicit) and create hyperlinks.

Links:

YoLinux.com Web Tutorials:

YoLinux.com Apache Configuration Tutorials:
- Apache, DNS (bind), FTP
- Apache logon authentication and web site protection - Add a login to your web site. Authenticate using a password file, NIS, LDAP or MySQL.
- Redirect a web page or web site/domain request to the proper web site/domain
- Linux Internet Security and Configuration
- Tomcat: Java servlet server
- My Photo Gallery - Online photo album
Audio Streaming Server Set-Up
Real Video Server Configuration
Learn XHTML in two minutes - Look and learn.
Learn HTML in two minutes - Look and learn.
Web Tricks - HTML, Javascript, e-mail
Setting up a web page counter for display on the web page
Server Side Web Page Scripting Tools - facilities for the creation, publishing and management of web content.
YoLinux Tutorials on Dynamic Content:

Books:

	"Apache Server Bible 2" by Mohammed J. Kabir ISBN # 0764548212, Hungry Minds This book is very complete covering all aspects in detail. It is not your basic reprint of the apache.org documents like so many others.
	"The Apache Modules Book: Application Development with Apache" by Nick Kew ISBN # 0132409674, Prentice Hall Feb 2007 Information and examples for Apache 2.x modules.
	"Apache Cookbook: Solutions and Examples for Apache Administrators" by Rich Bowen, Ken Coar ISBN # 0596529945, O'Reilly Media Jan 2008 Security, Aliases, Redirecting, CGI Scripts, the suexec Wrapper, Error Handling, SSL, ... configuration and examples for Apache 1.X and 2.X
	"Apache Security" by Ivan Ristic ISBN # 0596007248, O'Reilly Media March 2005 Installation, configuration, Dos, logging, monitoring, mod_security, ...
	"Writing Apache Modules with Perl and C" by Lincoln Stein, Doug MacEachern and Linda Mui ISBN # 156592567X, O'Reilly March 1999 Information and examples.