COM Port Stress Test is a tool for testing a COM or RS232 port (device).
It is also a very handy utility during your LPT port development activities.
Router Port Forwarding is a port forwarding and port triggering tool for router.
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.
Monitor RS232/422/485 COM ports in your system. Analyze and log serial port.
VSPE is intended for engineers and developers to create/debug/test applications.
Famatech International Corp.
Retrieves versions of programs running on the detected ports.
It is an advanced serial port test, simulation and data analysis tool.
PFPortChecker is a useful and reliable port test application.
Posiflex Technology Inc.
Set port settings and design print test for various Posiflex POS printers.
Sound card based real time oscilloscope with sophisticated triggering method.
I+ME Actia GmbH
XS Monitor offers further options like detailed filtering and triggering.
ACTION takes charge over tasks, triggering them whenever they are scheduled.
Zeta Centauri, Inc.
SampleTrigger is an application used for triggering samples from a MIDI device.
The DTC Initium supports software and hardware triggering of data sets.