Free Open Source Software. All of the software on this list I have personally vetted through frequent use.
Forget pasting into MS Paint or using snipping tool. ShareX is an extremely easy to use and full featured screenshot and screen recording tools. One of my most used programs in my day-to-day life.
Clipboard manager with searchable and editable history.
It's possible to save plain text, images, HTML and other formats, use plugins, filter out content by text, data format or window from which it is copied, use multiple tabs, control application using command-line interface and scripting, assign system-wide shortcuts, paste item into application just by selecting it in tray menu and more.
VLC's in dire need of some GUI modernization, but it'll serve most people just fine for watching videos and has done for years.
The search for an open source editor that is as quick and fully featured as Sublime has led me to Cuda.
Graphical git management can help with complicated projects.
A photoshop alternative without Adobe's nonsense that will work swimmingly for most.
Peazip's able to extract pretty much whatever you throw at it, and has the highest compression speeds. I see several comments complaining that PeaZip has a slow/laggy interface. I wouldn't know, because I hardly ever see the interface thanks to the "extract here" and "smart new folder" context menu options.
I used Bitwarden free for years. The premium is only $10/year if you want to support them.
Don't pay for Microsoft Office.
The final word in multiboot USB utilities. Drag and drop ISOs. Can configure persistence.
*Android utility. Can be used to view your Android device's screen and interact with it from the comfort of your PC.