DwAfrica.com

A Simple Multithreaded Web Server
A tutorial article from java.sun.com with the source code for a working minimalist webserver.
developer.java.sun.com/

Bajie Java Http Web Server
Includes installation guide, FAQ, bug list, and source.
www.geocities.com/

Tynamo Web Server
A fast, conditionally compliant HTTP/1.1 server and Servlet 2.2 container specifically designed for embedded Java devices, including TINI, JStik, SNAP, and EJC.
tynamo.qindesign.com/

Free Servers
12 MB. Includes basic or advanced editing features. Contains banner ads and popups. Upload via browser only.
www.freeservers.com/

Vq Server
Java server for Windows 9x/NT and Mac. [Freeware, requires registration]
www.vqsoft.com/

WebServer
A web server written in Java. Supports CGI, PHP, and Perl. Requires Unix-like OS. [Open source, GPL]
webservjava.sourceforge.net/

XmlHttpServer
A secured Web Server developped in Java, Servlet container and using XT (a Java XSLT processor) to transform Xml into Html documents. [Open Source]
www.xmlhttpserver.org/

Jetty HTTP Server
A HTTP Server and Servlet container written in 100% Java. [Open source, Artistic-like License]
jetty.mortbay.com/

Dwarf HTTP Server
Fully-featured web server with Java Servlet API 2.2 and Java Server Pages 1.1 implementation. [Shareware]
www.gnome.sk/

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