PSB, which stands for "Photoshop Big" also known as "large document format".
Shazragore post a comment:
This is complete offline one click standalone setup of Adobe InDesign CS6 which is rrequirements with both 32 bit and 64 bit operating systems. Adobe InDesign CS6 has an excellent customization option and by default, it provides a window option to select a pre-existing workspace or create your own.