When I was working on this stuff, the most popular GPLed code was ABINIT – do people still use that? (My lab was a SIESTA shop, and there were a lot of CASTEP p

When I was working on this stuff, the most popular GPLed code was ABINIT – do people still use that? (My lab was a SIESTA shop, and there were a lot of CASTEP people around, but not many using VASP...)