AOLserver  
   Open-source web server by America Online, multithreaded, Tcl-enabled, massively-scalable and extensible, also features database integration and a dynamic page scripting language (ADP).
   http://aolserver.com/

Roxen Platform  
   Commercial offering based on the Roxen GPL server but with many more features.
   http://www.roxen.com

CERN httpd  
   No longer maintained, but possibly of historical interest.
   http://www.w3.org/Daemon/

WN  
   Web server that runs on a variety of Unix platforms and is free under the terms of the GNU General Public License. Online user guide, and other documentation.
   http://hopf.math.nwu.edu/

Common Lisp Hypermedia Server: CL-HTTP  
   A highly portable http/1. 1 server which supports cgi, server-side lisp programs, java, javascript.
   http://www.ai.mit.edu/projects/iiip/doc/cl-http/home-page.html

PicoWeb  
   Product description, news, support pages.
   http://www.picoweb.net/

Netscape Enterprise Server  
   Scalable web server software for deploying the largest-scale web sites.
   http://home.netscape.com/comprod/server_central/product/enterprise/index.html

Pi3Web  
   Supports CGI, FCGI, ISAPI, PHP4, SSL. Free binary or source downloads, documentation, mailing list, FAQ, screenshots. [Windows, Linux]
   http://pi3web.sourceforge.net/pi3web/

Aestiva  
   The HTML/OS product enables web designers to build advanced dynamic sites w/out CGI programming. For Unix and NT servers. ISP-friendly.
   http://www.aestiva.com

Zeus Web Server  
   The world's most scalable high performance web server software, providing solutions for content providers, ISP hosting, intranets and secure e-commerce with comprehensive support.
   http://www.zeus.com/

Tcl Web Server  
   A pure-Tcl web server.
   http://tcl.activestate.com/software/tclhttpd/

Xitami  
   Portable free web server, distributed with source code according to a liberal license agreement. Online documentation on how to install, use, and configure.
   http://www.imatix.com/html/xitami/index.htm

The SRE-http project  
   dedicated to the provision of free, WWW-aware software to the OS/2 community. Written primarily in REXX, theflagship product is the SRE-http http/1.1 server for OS/2.
   http://www.srehttp.org/

kHTTPD for Linux  
   An http-daemon webserver for linux. Khttpd is different from other webservers in that it runs from within the linux-kernel as a module device-driver.
   http://www.fenrus.demon.nl/

Voyager Server  
   For QNX OS and/or embedded devices.
   http://www.qnx.com/products/photon/internet.html

Quiotix Embedded WebServer  
   Commercially supported full-featured HTTP server for embedding into hardware and software products.
   http://www.quiotix.com/wshome.html

StWeb Web Application Server  
   Apache based server with application server functionality
   http://www.stweb.org/

Micro_httpd  
   Implements all basic web server features in only 150 lines of code.
   http://www.acme.com/software/micro_httpd/

NCSA HTTPd  
   No longer supported, site still includes extensive documentation.
   http://hoohoo.ncsa.uiuc.edu/

Post Point Software  
   XCache, cache management tool. Free trial version, support pages, news.
   http://www.postpointsoft.com/

GeneWeb  
   A web interface for your family tree.Unix.
   http://pauillac.inria.fr/~ddr/GeneWeb/

Netcraft  
   A comprehensive list of servers. Also a comprehensive survey of webserver software usage.
   http://www.netcraft.com/survey/servers.html

SambarZone  
   Independent Sambar Server support resources. Sambar mailing list archive.
   http://www.sambar.ch

NetCloak  
   Web server enhancement package that allows you to create interactive, dynamic web sites. Running as either a stand-alone CGI application or as a high-performance WebSTAR API plug-in.
   http://www.maxum.com/NetCloak/

fhttpd  
   FTP/HTTP server with modules support. Modules run as separate "looping" processes locally or remotely, and can be configured to run under separate userids.
   http://www.fhttpd.org

SQLData Desktop Server  
   A powerful web database server that allows user to access ODBC data sources using a web browser. Now you can have your own database server with no CGI or programming.
   http://www.sqldata.com/desktop.htm

The Caudium Webserver  
   Feature rich, open source webserver with many unique features like on-demand image creation and advanced server-side parsing.
   http://caudium.net/

Advanced Communications  
   Company specializing in remote development. Advanced Hosting Controller, Auction Builder, ECommerce Builder products. News, product descriptions, job vacancies, client sites.
   http://www.advsoft.net/

HAHT Software  
   Sells tools and a development environment that lets organizations extend their enterprise infrastructure and data onto the Internet.
   http://www.haht.com/

Zilog: EZ80 Webserver  
   Overview of chip-based Z80S183 Advanced Mixed Signal System and Z80S188 Advanced Embedded Microprocessor. Technical documentation and support pages.
   http://www.zilog.com/ez80/

InstantServers  
   Desktop Web hosting solution. Documentation and technical specifications available. [Windows]
   http://instantservers.com/

ATPhttpd  
   High performance, caching webserver. Good for NFS mounted web shares, or for serving lots of static content 2 times faster than Apache.
   http://www.redshift.com/~yramin/atp/atphttpd/

Secure Web Server for S/390  
   HTTP/HTTPS server for OS/390, MVS, and VM offers fully secure web site hosting on the mainframe as well as direct dynamic web access to any 3270 application. MVS and VM fact sheet available in PDF format.
   http://www.informationbuilders.com/products/web390/

A Model of Web Server Performance  
   PDF and HTML versions of this article, with a forum. By Louis P. Slothouber, Ph.D.
   http://www.geocities.com/webserverperformance

Mac Web Server and BBS  
   Operator Headgap Systems is the Worldwide Distributor for TeleFinder Internet BBS and Server Software. Full documentation, ordering and update information.
   http://www.Mac-WebServer.com

Center for Information Technology Integration: Webcard  
   Based on a Schlumberger Cyberflex Access Java Card. Testdrive, technical report, press releases, source.
   http://www.citi.umich.edu/projects/smartcard/webcard/

IPic - A Match Head Sized Web-Server  
   Includes photographs, circuit diagrams, overview, and technical information.
   http://www-ccs.cs.umass.edu/~shri/iPic.html

Netcraft: Web Server Survey  
   Web tool retrieves hosting software information from any domain name.
   http://uptime.netcraft.com/

Newton Personal Data Sharing  
   A web server for a NewtonOS 2.x device.
   http://npds.free.fr/

AbaSioux HTTP Server  
   The server supports virtual servers, CGI, SSL, and can easily be extended by writing plugins. The server binaries, documentation, and header files are freely available.
   http://public.toilet.ch/software/abasioux/index.htmx

GoAhead Software  
   Develops service availability software that makes the Internet Infrastructure more reliable.
   http://www.goahead.com/webserver/webserver.htm

Small Web Servers  
   Contains information on three projects, webACE, webACE II (very small web servers) and Spud (a potato-powered web server ).
   http://d116.com/

Spud  
   A potato-powered web server.
   http://d116.com/spud/

Plesk Server Administrator  
   World-class, innovative new product designed to make web server management easier for everyone.
   http://www.plesk.com/

HTTPi  
   Small-footprint server offering executables, server-parsed pages, access control and virtual hosting (perl).
   http://www.floodgap.com/httpi/

OWSKiller  
   Free replacement for oracle web server.
   http://owskiller.penguin.cz/index.html

Abyss Web Server  
   A free and small personal web server for Windows and Linux supporting HTTP/1.1 and CGI. Features a remote web management interface.
   http://www.aprelium.com/abyssws/

Web Server 4D  
   A full featured MacOS and Windows web server that has an integrated database for publishing data on the web.
   http://www.mdgcs.com/

Roxen Webserver  
   Web server and application server which includes support for RXML, a tag-based language for constructing dynamic content. Allows tag plugins to be written in Pike.
   http://www.roxen.com/products/webserver/

ghttpd  
   A fast and efficient HTTP server that has CGI support (no post support, only get). Ghttpd has a small memory footprint and is capable of handling thousands of simultanious connections. GPL.
   http://gaztek.sourceforge.net/ghttpd/

Web Server/400  
   A native AS/400 application that takes full advantage of the latest IBM OS/400 V3R1 offerings, and provides all of the features of the most popular current Web servers.
   http://www.inetmi.com/iseries/webserver/

Xs- Httpd  
   Small and fast WWW server with many features.
   http://www.stack.nl/~johans/xs-httpd/

Phttpd  
   Lightweight multithreaded solution. Partial documentation, free source download. [Solaris]
   http://www.theo-physik.uni-kiel.de/phttpd/