After trying a lot of different calculators, I just settled on this little shell script to launch/raise a nodejs repl with FN+Backpspace: if [ $(xdotool sear

After trying a lot of different calculators, I just settled on this little shell script to launch/raise a nodejs repl with FN+Backpspace: if [ $(xdotool search --name "calc repl") ]; then xdotool search --name "calc repl" windowraise else xfce4-terminal \ --title="calc repl" \ --color-bg=#123 \ --color-text=#fec \ --hide-scrollbar \ --font="Deja Vu Sans Mono 14px" \ --geometry 40x14 \ --execute node -i -e "$JSREPL" fi ($JSREPL just contains some extra functions that I want in a calculator) I can easily go back to previous calculations and results, define vars, run loops whatevs. Having it on a key combo and launching the terminal with a distinct text/bg color really makes a difference. It also launches faster than most other calculators I tried. For my purposes (non-scientific, mostly programming stuff), it's been great.