This mod was a german fan-project called Tower Defense: Trinity Force for C&C Generals Zero Hour...
This UI is very useful in the game because
there's a maximum of 18, instead of 14
command buttons and all of these are in the right
side, devided in sections (activities, upgrades &
system). This UI was available in the TDTF demo
versions. In the final version there will be a new
one.