WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
TreeSize - TreeSize tells you where precious disk space has gone to.
Sketch - Professional digital design for Mac.
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.
Invision - Prototyping and collaboration for design teams