PuTTY - Popular free terminal application. Mostly used as an SSH client.
Wise Disk Cleaner - Clean junks of Browsers, remove junk and useless files of Windows and Defragment your disk. Wise Disk Cleaner can delete these unnecessary files on your hard disk to free up disk space and make your computer run faster.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
iTerm2 - A terminal emulator for macOS that does amazing things.
SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.