Also missing is support for Pro Audio such as Nuendo and Dorico. If these would run on FreeBSD I would've swapped from OSX/Win years ago. At least there's some hope for Proton so gaming could work...

Reaper might run on FreeBSD with Linux binary support. It has a notation editor, so it might work as a Dorico replacement depending on your needs.

Sadly none of the free editors are as well developed as Dorico is at the moment including the new Musescore with it's Dorico "inspired" UI. Dorico's workflow just fits my needs perfectly at the moment.

Reaper and Nuendo aren't really comparable either. Nuendo just has so much engineering behind it for audio post and multichannel (e.g. Atmos) not to mention expression maps and excellent MIDI editing. I do admit Reaper, if it runs on linuxulator, could work quite well as a prototyping tool on the go. Then again Cubasis and Dorico iPad does it too and can import straight to the Desktop versions.

I do wish there were good open source options but, alas. Maybe some day...

If you are on macOS, you can also try Affinity Photo as a Photoshop replacement.

For Lightroom there is Darktable.

Darktable is as much a Lightroom replacement as LibreOffice is an Excel replacement or Gimp is a Photoshop replacement, i.e. it absolutely is not.

Source: portrait photographer for 20+ years that would ditch Adobe in a heartbeat if it were possible.

Darktable is in the uncanny valley with its similarity to Lightroom. It looks like LR, so your habits kick in, only to get the cold shower that Darktable is not really LR and the thing you wanted to do you must do differently.