Fast and stable operating system.

As the desktop environment to replace Aqua.

Terminal emulator to replace iTerm2. Other good alternatives: Hyper, Tabby & Alacritty

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

Calendar app to replace Apple Calendar.

To use macOS software on Linux. Also: Wine & PlayOnLinux - PlayOnMac.

A free Markdown editor to replace Typora (which is now paid).

System optimizer and monitoring. Also worth mentioning: BleachBit

Audio utility.

To replace Time Machine for backups. Also worth mentioning: Déjà Dup & TimeShift

Partition manager to replace Disk Utility. Also worth mentioning: GParted

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.

To play videos and cast movies on my AndroidTV videoprojector. To replace IINA and Airflow. Also worth mentioning: MPV & Celluloid.

For video conversion/transcoding. It's already what I'm using on macOS.

To record audio. It's already what I'm using on my Mac.

As a document viewer to replace Preview and Skim. Also worth mentioning: zathura & MuPDF.

As an image viewer to replace Preview. Also worth mentioning: nomacs & qView also look interesting, so I'd have to take a look at it.

For graphic design. It's already what I'm using on macOS. Also: Corel Vector & Akira

For vector graphics editing to replace Affinity Designer. Also: Vectr

A nice vector graphics app when I don't want to open Inkscape. It's free on Linux.

Video editor to replace Final Cut Pro. Also: Olive Video Editor & DaVinci Resolve.

Photo editor to replace Adobe Lightroom.

For managing fonts, and to replace Font Book. Also: FontBase

Code editor to replace TextMate.

FTP client to replace Transmit.

I'm using Dolphin, since it can handle FTP/SFTP natively.

For gaming.

For gaming.

A free, open-source, cross-platform real-time strategy (RTS) game of ancient warfare.