>Hi all
>
>http://www.developer.com/java/other/article.php/3433891
>
>Fortran also in the ranking ?

On their site, they say

"This overview is published unofficially, because it could be the case that we missed a language. If you have the impression there is a programming language lacking, please notify us at tpci@tiobe.com."

You could send them an email about fox.

Eyvind.