WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
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.
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.
TreeSize - TreeSize tells you where precious disk space has gone to.
Cygwin - Cygwin is a set of tools that provide Linux and POSIX functionality to Windows.