Other Apps to Install

Download and install Signal
Install Tor Browser (forget how exactly I did this-- maybe Tor Browser Launcher? From POP store?)
Install Chromium via the POP app store if you like.

Consider installing Cwtch.im
Install Wire desktop via these instructions

Onionshare (consider the CLI)

If OnionShare's GUI installations are throwing errors, try installing and using the CLI. I'd recommend installing it with pipx rather than pip. Here's an example:

# Install pipx (see: https://pypa.github.io/pipx/installation/)
python3 -m pip install --user pipx
python3 -m pipx ensurepath
# Install onionshare-cli
pipx install onionshare-cli
onionshare-cli --help

Upgrading `onionshare-cli`

If using pipx, try pipx upgrade onionshare-cli

If using regular pip3, try something like pip3 install --user --upgrade onionshare-cli

GUI Markdown editors

While Neovim/Vim is fine for editing Markdown, if you want a different aesthetic, try Typora (with my forked theme), Apostrophe, or Ghostwriter.

Manuskript seems like a decent novel-writing app for Linux, but there are others.

If you install any of the programs below, you may need to create your own "desktop" file, so that your Desktop Environment can "find" these applications. These desktop files go in ~/.local/share/applications.

And sometimes you need to go download a PNG file to serve as the Icon.

Standard Notes

[Desktop Entry]
Type=Application
Name=StandardNotes
Exec=/home/$USER/other-apps/standard-notes/standard-notes-*-x86_64.AppImage 
Icon=/home/$USER/other-apps/standard-notes/icon.png
Terminal=false
Categories=Office;Notes;

Cwtch

(Releases)

[Desktop Entry]
Type=Application
Name=Cwtch
Exec=/home/$USER/other_apps/cwtch/ui
Icon=/home/$USER/other_apps/cwtch/cwtch.png
Terminal=false
Categories=Network;InstantMessaging;Internet

Ricochet (no longer maintained)

Download a Ricochet icon as a png if necessary.

[Desktop Entry]
Type=Application
Name=Ricochet
Exec=/home/sschlinkert/other_apps/ricochet/ricochet
Icon=/home/sschlinkert/other_apps/ricochet/ricochet.png
Terminal=false
Categories=Network;InstantMessaging;Internet

Schlink's Docs