No, not illegal, but also not CAD. It is just a sample of existing plugins made with a toolbar, two years ago.These scripts are not up to date. But CAD?
@ Didier, I made this toolbars for German users and used one of your scripts for the basic. I let your name for the credits ( as the author of the basic script ).
There are some reasons for to stop the developement, so it is no longer available with updated scripts.