The software I'll install on my laptop once I ditch macOS for Linux

Partition manager.

Image viewer.

VPN.

Document viewer.
Also: Okular

File manager.
Also: Dolphin File Manager

For video conversion/transcoding.

For listening podcasts.

FTP client.

For vector graphics editing.

For managing fonts.

For graphic design.
Also: Vectr

Terminal.
Also: upterm, Tilix and rxvt-unicode.

Video editing.
Also: Kdenlive & Flowblade.

Peer to peer.

Video player.

Markdown editing.

For emails.

Quick code editing.

Vim-style coding.

Coding.
Also: Howl

Note taking.

Note taking.

Second web browser.
Also: Midori, Min browser and Basilisk.

Main web browser.

File archiver.

For communicating.

For Slack and other apps I need.

For gaming.

System optimizer.

Firewall application that monitors and controls outbound internet traffic.