nginx - A high performance free open source web server powering busiest sites on the Internet.
Traefik - Load Balancer / Reverse Proxy
AWS Elastic Load Balancing - Amazon ELB automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud.
Google Cloud Load Balancing - Google Cloud Load Balancer enables users to scale their applications on Google Compute Engine.
Apache Thrift - An interface definition language and communication protocol for creating cross-language services.
Citrix NetScaler - Citrix ADC is an industry-leading application delivery controller, L4-7 load balancer, and GSLB that ensures 100% uptime and unmatched security across devices and locations.