GPU-Z is a lightweight utility designed to give you all information about your video card and GPU.

Disk space analyzer (Disk usage analysis software) is a free software utility for the visualization of disk space usage by getting the size for each folder (including subfolders) & files in folder or drive. Disk Space Analyzer generates chart showing disk usage distribution according folders and files.

Folderscope is a free software utility for analyzing and reorganizing folders of any size. It is designed to work efficiently even with extremely large folders, and has been tested on a folder containing 800,000 files and 400 gigabytes of data.