SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
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.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Kerish Doctor - Kerish Doctor 2015 is an all-in-one solution for automatic maintenance of Windows-based computers.
LightShot - The fastest way to take a customizable screenshot.