Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Jotform - Free Online Form Builder & Form Creator
TreeSize - TreeSize tells you where precious disk space has gone to.
FORM.com - FORM.com is an enterprise mobile forms software and solutions perfect for optimizing online and offline inspection, audit, compliance operations and more.
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.