software
haproxy
See also: port 80 (http), port 443 (https), haproxy (user)
High-performance TCP/HTTP load balancer and proxy.
haproxy is installed on 9 hosts in your infrastructure, across 6 operating systems, in 2 different versions.
Read more: "HAProxy" on Wikipedia, haproxy.org, github.com/haproxy/haproxy