This is a simple app for Perl/Tk that gets your system time and compares it with the time specified by a timeserver (Time protocol - TCP port 37). It can be used to check the accuracy of your system clock. It is based upon the command-line version given in Programming Perl, published by O'Reilly.
A screenshot of it is shown on the left.
It can be downloaded here.
Comments, suggestions, bug reports etc. should be emailed to me at alan@whirlnet.demon.co.uk