One Ping Only does just that, pings a single host.
Open Source BGP Looking-glass
Active-probing-based network IDS for wireless networks
Panel Indicator to interact and monitor hosts
Extracts multiple proxies from a list of websites
Automated Bitcoin mining monitor and up-time enforcer
NetStress is a DDoS and network stress testing tool.
Firewall/Proxy FreeBSD
ss7mon an SS7/SIGTRAN signalling monitor
provides monitoring work of the system distinguishing by applications
Daemonlogger is a packet logger and soft tap developed by Martin Roes
Easy to use firewall for linux beginners.
Send steganographed text messages to mtr with fake hops in the network
Go to github.com/vlm/asn1c for the latest version.
RDP, VNC and Port-fowarding over a pure HTTP/HTTPS protocol.