nginx - A high performance free open source web server powering busiest sites on the Internet.
Kemp LoadMaster - L4/7 Load Balancer w SSL offload
Envoy - Visitor registration that's changing how guests are greeted in companies around the world.
Microsoft Azure Traffic Manager - Microsoft Azure Traffic Manager is a great solution that enables you to route incoming traffic for high availability and performance.
Haproxy - Reliable, High Performance TCP/HTTP Load Balancer
Web Werks Load Balancing - Web Werks Load Balancing service ensures proper functioning of your traffic by directing all the incoming traffic through a network of load balancers, allocating the data load to each server, thereby improving the performance significantly.