Traefik is a leading modern reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing infrastructure components and configures itself automatically and dynamically.
HAProxy is free, open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications that spreads requests across multiple servers.
Proxy is a high performance HTTP(S), websocket, TCP, UDP, Secure DNS, Socks5 proxy server, TLS. Chain-style proxies, NAT forwarding in different LAN, TCP/UDP port forwarding, SSH forwarding ,ipv4 and ipv6 supporting.