nginx - A high performance free open source web server powering busiest sites on the Internet.
ManageEngine OpManager - Monitors routers, switches, firewalls, load-balancers, wireless LAN controllers, servers, VMs, printers, storage devices, and everything that has an IP and is connected to the network.
NSX - Data Center Networking
Cilium - API-aware Networking and Security
Cisco ACI - Application Centric Infrastructure (ACI) simplifies, optimizes, and accelerates the application deployment lifecycle in next-generation data centers and clouds.
Warden - Alert your users when they're getting hacked