My only real cheatsheet is a list of shortcuts I maintain for programs/apps I use:
system:
ctrl+space=switch keyboard input language
iterm2:
cmd+; = autocomplete
fn+cmd+< = scroll to top of buffer
fn+cmd+> = scroll to bottom of buffer
fn+cmd+^ = pgup buffer
fn+cmd+v = pgdown buffer
fn+< = beginning of line
fn+> = end of line
shift+cmd+[ = previous tab
shift+cmd+] = next tab
cmd+K = delete til end of line
cmd+enter = full-screen on/off
cmd+shift+e = show command timeline!!!
chrome:
opt+cmd+J = devtools
cmd+] = devtools tab right
cmd+[ = devtools tab left
opt+space = start/stop toggl
fn+cmd+< = move tab left
fn+cmd+> = move tab right
fn+cmd+^ = move tab to start
fn+cmd+v = move tab to end
sublime:
ctrl+` = open python console
cmd+shift+P = open command palette
cmd+P = search open files
ctrl+opt+C = open in browser with View in Browser package (create tmpfile if dirty)
cmd+shift+[ = Move to left pane
cmd+shift+] = Move to right pane
ctrl+0 = move to sidebar
cmd+k+b = show/hide sidebar
cmd+k+u = uppercase
cmd+k+l = lowercase
ctrl+shift+v = multiple cursor down
ctrl+shift+^ = multiple cursor up
shift+tab = back up tab indentation (at beginning of line)
cmd+[ = dedent (when highlighted)
cmd+[ = indent (when highlighted)
cmd+shift+. = show dotfiles in open file view
cmd+shit+g (when opening file) = navigate to path for file selection
# edit package override files in /User/user/Library/Application Support/Sublime Text 3/Packages/User/
VS Code:
option+^ = drag line up
option+v = drag line down
ctrl+` = open terminal
cmd+p, :#<enter> = go to line
ctrl+enter = open alongside
cmd+b = open/close side panel
cmd+option+shift+> = move tab right
cmd+option+shift+< = move tab left
cmd+option+F = toggle fullscreen
cmd+shift+l = highlight all selected
cmd+shift+o = type fn name to jump to in open file
cmd+option+shift+c = copy path of active filename
Asana:
cmd+shift+M: monospace highlighted text
I have this actually, but it typically only lists a small selection of shortcuts for the active application. Also doesn't work for web applications with shortcuts