Mine is FFmpeg by far
Honorable mentions: Imagemagick, 7zip, zip, htop
3 Likes
pacman is probably the most important for my use.
3 Likes
gcc
1 Like
Lynx web browser is nice and light to access space weather for HF communications. 
$ sudo pacman -S lynx
$ lynx https://www.swpc.noaa.gov/
One can navigate and read for data. Good for Amateur Radio, Coast Guards etc.
And, of course, other web sites.
edit: Some folks like weather also:
$ lynx https://www.weather.gov/
2 Likes
likes cat
2 Likes
micro | ranger | mc | pacman/paru
2 Likes
vi, for I must change files (frequently).
1 Like
pacseek
1 Like
To name some that weren’t mentioned beyond the obvious ones: irssi, mocp+cava, screenfetch/neofetch, pdftk.
my scripts
rsync
pacman/paru
1 Like
sudo
1 Like
1 Like
I would have to choose bat1 over cat` for the colors and line numbers.
lazygit + git flow over git for ease of use and productivity.
neovim, starship, and there are probably several others I’m missing at the moment