What are the best Load Balancer / Reverse Proxy Tools?

AWS Elastic Load Balancing (ELB), HAProxy, Traefik, Envoy, and DigitalOcean Load Balancer are the most popular tools in the category "Load Balancer / Reverse Proxy". "Easy" is the primary reason developers pick AWS Elastic Load Balancing (ELB) over its competitors, while "Load balancer" is the reason why HAProxy was chosen.