DMDE. I know they have free and paid version. Even with the free version I was able to recover 500gb of data 100% with all the folder structure intact. With the free version you will have to manually select each directories but it was worth the effort.

Also Mega. I have multiple legacy accounts that has permanent 50gb space.

Taking the opportunity to get on my soapbox and remind everyone that free software still requires someone's time and effort to maintain. If you've been using a free app for a while and you and you enjoy it (and you have the means to do so), consider sending a donation to the developers/maintainers! It's a good way to help ensure that the great, free app you enjoy stays great and free.

One I use every day is ShareX.

The Portable Apps Platform - free portable software meta app. It's there, every day, like the Windows start button is there.

GNU Texmacs.

I'm never, ever again wasting my time typing in sketchy and weird latex commands. Point and click. Easy and to the point.

I just downloaded Libretube from FDroid, which I also just downloaded haha, and I'm absolutely loving it!

So much better than YouTube.

Ghidra

If you like to listen online radios, Open Radio is a nice one!

Signal and Weawow. Although I have donated since they are wonderful apps IMO.

Your simple, every day, web browser. It doesn't matter which one. They're all free and they all are the main, basic way of accessing the internet.

I'd have used "the internet" itself, but most people still have to pay to get connected to it.

lichess

Pornhub ◖⁠⚆⁠ᴥ⁠⚆⁠◗

SwiftBackup! It helps me a lot every time I need to try a new custom ROM.