The latest nightlies of Webkit (development branch of Apple Safari) now have the web inspector in them. It doesn’t replace the tools in the other browsers, but it does have one very effective piece of unique functionality — a page load graph that gives an exact breakdown of order-of-loading and time-to-load of each script, stylesheet, and image.

First of all, enable the debug menu. It gives you access to the Javascript console and such things.

1. Open C:\Documents and Settings\chng1me.T40-92U-V46\Application Data\Apple Computer\Safari
2. Open Preferences.plist
3. Insert the lines below mid-file:

Open Safari by executing run-nightly-webkit.cmd in your Webkit install. Right-click and the inspect an element from the context menu.

Now, click on the icon in the bottom left-hand corner and choose Network.

Voila!