The best replacement for load balancer is web server.

The best alternatives to load balancer are rated as following:
★★★★★  web server
★★★★  proxy server
★★  adc
★★  reverse proxy
★  cluster
★  vip
★  haproxy

Your alternative for load balancer is not listed? Suggest!
Speaking about load balancer, one probably shouldn't forget about ssl.

Other search terms related to load balancer and their ratings are:
★★★★★ ssl
★ web servers
★ weblogic
You have in mind a companion for load balancer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of load balancer in all years. Click on graph for more.
load balancer
web server
proxy server