Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
iNetFusion - use multiple internets at once
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
AWS Elastic Load Balancing - Amazon ELB automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
Haproxy - Reliable, High Performance TCP/HTTP Load Balancer