There was a download of Sniff-em 1.12 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the program is YASC LTD. The program lies within Internet & Network Tools, more precisely Network Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Sniff'em 1.1 is a Windows based Packet sniffer an Network analyzer, a revolutionary new network management tool designed from the ground up with ease and functionality in mind. Windows 95,98(se),NT,2000 and XP, aswell as Dialup (RAS) support on all Operation systemsSniff'em aids at monitoring network traffic in order to recognize and decode certain packets of interest.
You may want to check out more software, such as PageScope Network Setup, VMTS ESX Patch Manager or CrossFTP Server, which might be related to Sniff-em.
Device Assistants
Debugging Tools