Legacy Developer Tool
See what’s talking to your device drivers. DriverSpyNT intercepts and monitors the I/O request packets (IRPs) sent to Windows NT device drivers, showing which processes send them and what they contain.
32-bit only; there is no x64 version. It supports Windows NT kernels and was tested through Windows XP.

What It Does
DriverSpyNT is a one-of-a-kind utility for watching how software talks to device drivers.
Hook virtually any device on the system to watch the requests it receives.
See which processes are interacting with the device, request by request.
Dump the contents of the I/O request packets for analysis.
Download
32-bit Windows NT kernels, tested through Windows XP. DriverSpyNT is shareware: To keep using it after the trial period, contact us to purchase it.
Bitsum Technologies
Independent Windows software since 2002. We build novel solutions to software performance and automation challenges.