music: mpd / ncmpcpp / mpc
video: ffplay
file Manager: coreutils / (occasionally) ranger
irc client: irssi
terminal emulator: rxvt-unicode
system monitor: "ps -e | grep"
text editor: neovim
screenshot: maim (I have a wrapper that uses slop to get screen selection)
image viewer: feh
mail: mutt
browser: w3m
version control: git
shell: mksh
multiplexer: tmux
schedule management: when
wifi management: shell script with lots of "wpa_supplicant" and "dhcpcd" calls followed closely by "pkill"s and "killall"s when it suddenly dies. Thanks broadcom :\