



Spoiler: I've switched to Linux for my main computer.












File manager to replace
Finder.
Other good alternatives: Thunar (if using Xfce) and
PCMan File Manager.






















Main web browser to replace
Google Chrome (Google…) and
Safari.
Like I do on macOS, I would use
ungoogled-chromium or Brave as my second web browser.




Email client to replace
Apple Mail. I've also tried Thunderbird, but it's too much and too bloated for me.
LucaMail also looks interesting.




This is the BitTorrent client I'm already using on macOS.
qBittorrent also looks pretty good but I've never tried it.




Firewall application that monitors and controls outbound internet traffic to replace
Little Snitch.













































I'm not playing games on my Mac, so this would be new.










Comments
Yes, good list, here more software https://pkgs.org
Great list, but didn't specify what each one is equivalent to on the Mac. For me, finding Typora.io was a revelation since it is the closest to Bear Notes that I've found so far.
Interesting list, mixing libre software with closed freemium.
Thanks for putting a light on Oni :)
If you prefer KDE integration:
For mail, there's also Kontact which can does what thunderbird does and more (cal, contacts), in a KDE integrated style. For screenshots Spectacle is integrated with KDE, it's got timing options. Although flameshot is great to edit on the fly, you can edit with a almost-light editor like Krita.
And if you're not into Firefox (waterfox being outdated), try https://github.com/Eloston/ungoogled-chromium instead of Google Chromium (which is bloated with spyware).
Cheers