F5 Networks

F5 Networks is the market leader in application delivery controllers (ADCs) — the layer-7 load balancers, TLS terminators, and application firewalls that sit in front of enterprise and internet-scale applications. BIG-IP (running TMOS) handles L4–L7 load balancing, SSL/TLS offload at line rate, web application firewall (WAF), DDoS mitigation, and advanced traffic management for large financial institutions, government agencies, and telecoms. F5's 2019 acquisition of NGINX — the world's most widely deployed web server and reverse proxy — extended their position into modern API gateway, ingress controller, and microservices traffic management use cases. F5 Distributed Cloud (formerly Volterra) provides cloud-native ADC and security capabilities across multi-cloud and edge environments.

BIG-IP, NGINX, WAF, SSL offloading, and application delivery controllers.