Safari extension is no longer supported

[tempusthales]

The format that you supplied the safari extension in, is no longer supported by Apple. When you double click to install it the following error appears:

Safari no longer supports this extension.

You can find new and updated extensions in the App Store or from developers’ websites.

But one can't find the plugin in the App Store.

[neilmayhew]

This extension is obsolete, and the maintainer has disappeared. Use the forked version instead.

[jfx2006]

Neil, My fork does not and will not work on Safari or any other web browser. Sending users to an addon that won't work for them will lead to nothing but frustrated users. Please stop.

This extension is obsolete, and the maintainer has disappeared. Use the forked version instead.

[neilmayhew]

Oops! Yes. Sorry, my bad.