Most of these are free. I have separated them according to the ones I personally have used and the ones that I have only heard about.
Also, before you download any of these, take a look at Ninite [ninite.com] because many of them are available on it in a one EXE basis. (I still have not used this program, yet)
Additionally, if you have any comments you could message me or leave a comment below.
* Ninite [ninite.com]
A handy tool that allows you to install multiple programs at once and is especially helpful on new computers. (can be used to install many programs on this list)
https://justgetflux.com/
A program that automatically dims the screen to the time of day, for instance, when the sun sets or when it is night time, so you do not strain your eyes and sleep better (especially helpful for those who browse at night)
CCleaner [www.piriform.com]
The Swiss Army Knife of tools. Clears space in your drive by removing cookies, history, Temp files, etc. (Also does much more. Very, very, helpful. This guide could help you. [www.howtogeek.com])
WizTree [antibody-software.com]
Lets you see what is taking space in your Hard Drives, and it can search for files. (extremely fast)
Notepad++ [notepad-plus-plus.org]
A Text Editor that is a strait upgrade from notepad and has a nice set of plugins.
Lightshot [app.prntscr.com]
A program that allows you to easily capture a screenshot and share it.
VLC [www.videolan.org]
The only video player you might ever need. Open source, has skins, and can play BlueRay files. (look up how to make it play BlueRay files ;) )
Icaros [www.videohelp.com]
Lets you see a picture on your video files icon. (A must have with VLC)
GeForce Experience [www.nvidia.com]
If you have an NVidia card this is a very helpful tool. Easier driver updates, free streaming tool, and a graphic settings optimizer. (This program may update in the background, which can cause lag until it is finished updating)
Kaspersky Password Manager [www.kaspersky.com]
A password manager that stores your usernames, passwords, and ID all under 1 master password. And can be accessed through an app. (paid)
Honeyview [www.bandisoft.com]
If you download Comics or Manga use this Image Viewer.
Process explorer [technet.microsoft.com]
Lets you see services a bit better than task manager and allows you to kill them :D.
Audacity [www.audacityteam.org]
Audio editing tool.
Recuva [www.piriform.com]
Lets you recover deleted stuff.
Revo uninstaller [www.revouninstaller.com]
Easily remove unwanted programs.
Daemon Tools Lite [www.daemon-tools.cc]
Burning CDs/DVDs and making virtual ones.
SandBoxie [www.sandboxie.com]
Used to test suspicious programs (You should never try to run, install, or even download any suspicious programs, even in Virtual Machines)



* WizMouse [antibody-software.com]
Lets your mouse work as intended. (click the link for more info)
Speccy [www.piriform.com]
Shows you your pc parts. (can easily be done without any external programs, but if you are too lazy :P)
Rainmeter [www.rainmeter.net]
A cool desktop customizer. (Skins and such)
LibreOffice [www.libreoffice.org]
Free Microsoft office look alike.
OpenOffice [www.openoffice.org]
Free Microsoft office look alike.
https://www.getpaint.net/
The free and easy Photoshop like tool.
GIMP [www.gimp.org]
The free and a bit more advanced Photoshop like tool.
LastPass [www.lastpass.com]
A free web based Password Manager.
KeePass [keepass.info]
A free app based Password Manager.
Free Download Manager [www.freedownloadmanager.org]
Better downloading experience through web browsers.
Team Viewer [www.teamviewer.com]
Give remote control over your PC to someone or just access it from afar (can be done in windows without programs but this might be easier, but never allow someone access unless you trust them 120%)
Ultimate Windows Tweaker [www.thewindowsclub.com]
A windows tweeker.

* uBlock Origin [chrome.google.com]
Best adblocker out there in my opinion. (If the ads aren't annoying or in your face, such as pop ups or auto videos, then try to not use it)
TamperMonkey [chrome.google.com]
Lets you run scripts. (look online for some scripts you might like, but be careful)
Turn Off The Lights [chrome.google.com]
Dims the screen around YouTube videos to lessen distractions.


* GreaseMonkey [addons.mozilla.org]
Lets you run scripts. (look online for some scripts you might like, but be careful)
Thumbnail Zoom Plus [addons.mozilla.org]
Enlarge images by hovering your mouse over them.

Have a nice day