Software development, collaboration & hosting
+1 for codeberg. There's forgejo for self-hosting too (codeberg uses this, btw)
Disroot (Netherlands, non-profit)
I love disroot but quick note: a lot of their services, like cloud, mail etc are unencrypted. I also advise not putting all your eggs in one basket.
VS Codium
I'd like to chime in here. There's not a lot of actually european editors, most are just FOSS globally.
But there's https://sublimetext.com/ in australia, which is NOT open source! But it exists.
There's also [more advanced] https://neovim.io/ and https://helix-editor.com/ which are ran in the CLI. I love both of these personally.
But VSCodium is a fine choice. I use it on windows since i don't like TUI apps there.