Complete Open Source solution to build clusters of Linux machines.

Provide loadbalancer hardware appliances and software solutions.

PC Webopedia entry for "load balancing".

Round-Robin DNS vs. Proxying. From: Web Techniques Magazine.

Content delivery network service company offering static and streaming content delivery.

Drop in module for the Apache web server that provides powerful, flexible and seamless load balancing of heterogeneous server clusters.

Internet traffic controller to reduce bandwidth costs and stabilize routers.

Makers of Central Dispatch (load-balancing) and Global Dispatch (DNS-based wide-area load balancing). The software runs on a variety of Unix systems.

Software measures the impact of load/stress on both timing and error rates for web servers.

Open Source Global content distribution and load balancing using BGP routing information.