Which Software is This?

[Faizann20]

Help would be appreciated :D

 

[Ashleyuk1984]

Looks like ZBrush

 

[Froomple]

Guess its Autodesk Maya, but not sure.
You can ask Mirada Studios directly :D
Pacific Rim Behind the Scenes of Prologue Sequence

http://www.cgmeetup.net/home/pacific-rim-behind-the-scenes-by-legacy-effects/

 

[Nitish]

Zbrush it is

 

[kuerten]

Zbrush it is

What he said.