Luke Gedeon

The default position for the menu in WordPress 2.7 is on the left, but since the scroll-bar is on the right, some people wanted the menu over there too. Plus a lot of blogs/websites have menus on the right so menu on the right seems to be a pretty popular option.
This plug-in moves WordPress admin menu to the right side of the screen.

Admin Menu on Right

Moves WordPress admin menu to the right side of the screen.

manu225

Select easily which admin menus to remove for which roles. 
A Pro version with more options is available: <a href="https://www.info-d-74.com/en/produit/remove-admin-menus-by-role-pro-plugin-wordpress-2/" rel="nofollow ugc">https://www.info-d-74.com/en/produit/remove-admin-menus-by-role-pro-plugin-wordpress-2/</a>

Remove admin menus by role

Select easily which admin menus to remove for which roles.

Admin Menu on Right vs Remove admin menus by role