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.
List available hosts, open ports, and their characteristics.
Displays, logs and analyzes all serial port activity in a system.
Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
HW Virtual Serial Port allows creating virual serial port drivers.
Simple Port Forwarding works with WebPages and not directly with your router.
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.
Router Port Forwarding is a port forwarding and port triggering tool for router.
Parallel Port PIC Programmer uses PC's parallel port for communication.
COM Port Data Emulator is a tool for emulating a com port or an Ethernet device.
COM Port Stress Test is a tool for testing a COM or RS232 port (device).
1st Net Scanner is a useful IP Finder and Port Finder. It builds IP finder, port finder, IP scanner...
The vnar performs measurements on one port or two port networks.