WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
GPS Status & Toolbox - Display your GPS and sensor data: Shows the position, number and signal strength of GPS satellites.
WizTree - WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.
Trail Sense - An Android app which uses your phone's sensors to assist with wilderness treks or survival situations.
SpaceSniffer - SpaceSniffer is a freeWare (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks.
HuntStand - HuntStand is an app featured with hunting and land-management that helps you to access the nationwide database of public and private landowners to view property lines, owner names, and WMA coverage comprehensively.