Short description of SNTP Clock Synchronization Service 3.1.3: This is an SNTP time synchronization client/server for the more advanced user wishing to provide SNTP time synchronization services under Windows NT4, Windows 2000, and Windows XP. This product incorporates full SNTP client and server functionality in complete compliance with RFC2030 - Simple Network Time Protocol (SNTP) Version 4. The SNTPService product is specifically to the Windows NT4, Windows 2000, and Windows XP environment.