Our website provided a free download of ReloadCSS 1.0 for Mac. The program is included in Internet & Network Tools.
From the developer:
ReloadCSS is a simple Safari Extension that adds a toolbar button that allows you to quickly reload your stylesheets without reloading the whole page. I'm a Web developer, and I often find myself working on the CSS for forms or ajax-loaded content, and I don't want to actually have to reload the whole page, re-enter form content, etc., just to see the new styles. If that sounds familiar, then download ReloadCSS and enjoy.
You may want to check out more software for Mac, such as Arch, Opera Update Checker or Yahoo! News, which might be related to ReloadCSS.