Active Ports monitors all open TCP and UDP ports on a local computer.
Simple Port Tester is a neat application created to test TCP and UDP ports.
UDP Test Tool is both a UDP packet generator and listening application.
Verigio Communications Inc.
Multi Port Forwarder enables you to redirect requests to another IP and port.
Convert your Kindle e-books into formats that other e-readers can handle.
Monitor open TCP and UDP ports and applications that open them on your PC.
The dialer uses one local UDP port and one local TCP port.
NetworkActiv AUTAPF is a UDP and TCP port forwarder.
Serial Port Tool
Professional debug tool for serial port, TCP/IP, UDP, I2C, HTTP communication.
ServerTalk lets you communicate directly with a TCP or UDP port on a server.
Scriptable data terminal supporting serial port, UDP, TCP client/server, etc.
Art of Ping
PingFu UDP transmits UDP packets encapsulated in the TCP communication protocol.
VirtualCOM-UDP is a software based UDP/COM Port Redirector solution.
Flachmann & Heggelbacher
Establishes TCP connections, accepts a TCP connection on a local port, etc.
Global Web Monitor
Scans about 400 ports a second. It supports both the TCP/IP and UDP protocols. Select address range....
Binary Visions Inc
Allows you to capture network traffic for TCP, UDP or ICMP protocols.