Sun's Servlet Page: java.sun.com/products/servlet
Apache Tomcat Server: jakarta.apache.org/builds/jakarta-tomcat/release
Linux Java Distribution: www.blackdown.org
IBM Java Distribution: www-106.ibm.com/developerworks/java/jdk
Apache Distribution: www.apache.org
Jakarta Project Extensions to Apache (Tomcat, etc.): jakarta.apache.org
Jetty, a Web Server Written in Java That Supports Servlets: jetty.mortbay.com