nginx - A high performance free open source web server powering busiest sites on the Internet.
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.
Azure Load Balancer - Azure Load Balancer delivers high availability and network performance to the applications.
Traefik - Load Balancer / Reverse Proxy
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy