This tool lets you quickly subnet IPv4 networks, visualise them, and split or join them with a single click. It also shows the address range, subnet mask, and number of hosts for each subnet. You can save and load your arrangement using bookmarks.
Access the Visual Subnet Calculator.
This was written in 2002, though I still use it constantly. One day I intend to make an equivalent for IPv6.
This utility allows you to see the contents of a shared memory segment created using the shm_* functions in PHP. Unlike the shmop functions, which allow you to read and write raw data in a shared memory segment, these are designed for PHP only and consist of serialized PHP variables in a linked list.
This program converts MRTG .log files to the correct .rrd format for Cricket.
I haven't used MRTG since 2002, when this script was written, so I make no guarantees as to its functionality, nor can I help with any problems.
This is based on code by Wrolf Courtney, Russ Wright and Alan Lichty.
This is a quick reference chart CSS cursor styles. I made it a number of years ago, but still find it occasionally useful.
In this article I describe two under-used HTML features that
can be used to improve the usability of your HTML forms.
All common desktop window managers support the labelling
of input fields, so by clicking on say the label of a checkbox,
the checkbox itself is selected. They also support keyboard
shortcuts (access keys) to move around the form quickly.
Checkboxes and radio buttons are inherently small and thus
a hard target to click on. Windows applications almost always allow
you to click on label text to use the form element. Why should web
pages be any different? I've gotten so used to putting labels
on my form elements that I get frustrated when using websites that
have not done so.
