Very useful free tools that you can find online:
Development
Notepad++ My favorite text editor solution, supports lots of languages and file types, you cant go wrong with them.
VSCodium Perfect IDE for small and large projects.
Godot Want to make a game? we present GODOT engine an Awesome Open Source and Free Game Engine.
Office Work
Open Office Why would anyone pay for an Office Solution when this can do it all and much more.
Foxit Reader Need a PDF viewer that allows you to edit PDF docs without a expensive subscription? try this you cant go wrong with them.
Thunderbird is a free email application that’s easy to set up and customize – and it’s loaded with great features, and best of all it’s free!
Images and Video
Krita is a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone.
OpenShot Video Editor is a free and open-source video editor for Windows, macOS, Linux, and ChromeOS.
Inkscape is professional quality vector graphics software which runs on Linux, Mac OS X and Windows desktop computers. A perfect alternative to Adobe Illustrator, if you are unable to pay for their subscription.
GIMP is a free and open-source raster graphics editor used for image manipulation and image editing, free-form drawing, transcoding between different image file formats, and more specialized tasks. This one is also a great alternative to Adobe Photoshop, and its free.
https://opengameart.org A source very good source of some game assets to get you started with some game development.