F5 Advanced Firewall Manager - Stop even the most massive and complex DDoS attacks with BIG-IP Advanced Firewall Manager: advanced data center protection against layer 3–4 threats.
Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
PingInfoView - PingInfoView is a small utility that allows you to easily ping multiple host names and IP addresses, and watch the result in one table.
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.
Open Nettest - Open Nettest is a platform for collecting, processing and visualizing data related QoS and QoE.