Free Software Foundation, Inc.
Port Ping is a .NET Framework 3.5 Based utility application.
Simple Port Tester is a neat application created to test TCP and UDP ports.
Active Ports monitors all open TCP and UDP ports on a local computer.
PC Remote Partnership
It allows remote access to PC from Windows 8 apps and Windows Phone apps.
Process And Port Analyzer is a packet viewer and sniffer.
It allows you to control another computer over LAN or Internet.
Remote Helper is a client for the Remote HD iPhone app.
OCS Inventory Team
This tool uses Windows SysInternals Psexec and PuTTY remote execution tools.
Reliable network and website monitoring. Sensor types include PING, PORT, HTTP, HTTPS, HTTP Advanced....
Send an ICMP packet (ping) to a device, connect to a required TCP port.
Diagnostic program that includes ping, traceroute, and port scan functions.
PingSX2 allows to perform ping test for remote hosts.
Cisco Systems, Inc.
Cisco Unity Port Status Monitor is a remote connection utility.