A useful progrem to see where all your free space is going. Similiar to WinDirStat but commically faster!
This powerhouse of a tool can do many of the simpler video-editing sorta stuff you may run accross. You can add, remove, strip audio, convert video and audio between formats, resize, crop, or any number of things. It's super usefull. One major downside though, it's officially command-line only.
Like Adobe Photoshop, but you know... free.
Like Adobe Illustrator, but you know... free.
Most people know this one, but if you do not, it's the easiest way to play any number of audio and video files.
Good for 3d animation and modeling. It's powerful but has a bit of a learning curve.
Changes the color of your computer monitor, removing blue light to help you sleep better. Ignoring that though, it has settings you can enable to drastically reduce eyestrain, which is great if you are suffering a headache.
Like WinRar/WinZip... but you know... free.
It's a solid text document editor. It's not overly complex, does not have all the bells and whistles of dedicated IDEs, but for quick edits, it's awesome.