Sniffit 0.3.7 beta for Windows NT/2000. This package requires winpcap, available here.
You can download it from the following link: https://packetstormsecurity.com/files/download/21959/sniffit_NT.0.3.7.beta.zip
Source: https://packetstormsecurity.com/files/21959/sniffit_NT.0.3.7.beta.zip.html