Microsoft Quick Assist is a Windows 10 app that enables two people to share a computer over a remote connection so that one person can help solve problems on the other person’s computer.
Click Start and type Quick Assist, and then select Quick Assist in the list of results.
Visualize Your Drive Usage with Space Sniffer
SpaceSniffer is a freeWare and portable tool application that lets you understand how folders and files are structured on your disks
By using a Treemap visualization layout, you have immediate perception of where big folders and files are placed on your devices
Fast, Free and Easy Screenshots with Greenshot
Greenshot is a light-weight screenshot software tool for Windows with the following key features
Quickly create screenshots of a selected region, window or fullscreen; you can even capture complete (scrolling) web pages from Internet Explorer.
Easily annotate, highlight or obfuscate parts of the screenshot.
Export the screenshot in various ways: save to file, send to printer, copy to clipboard, attach to e-mail, send Office programs or upload to photo sites like Flickr or Picasa, and others.