Software Windows!

Synchronizes your PC clock with public time servers on the Internet.
License: Shareware
OS Support:

TimeSync allows to adjust the clock of your Computer using the Internet.
License: Freeware
OS Support:

AtomTime Pro will set your PC clock to the correct time.
License: Shareware
OS Support: Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,

TimeTools Digital wall clock ntp time synchroniser software.
License: Freeware
OS Support: Win 3.1x,Win95,Win98,WinME,WinXP,WinNT 3.x,WinNT 4.x,Windows2000,Windows2003,

FG Time Sync can automatically check the time to keep your PC's time accurate.
License: Freeware
OS Support: Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003,