Close every Linux app at once.
One quiet button in your system tray closes everything — and your session, terminal, and desktop stay exactly where they are.
Three steps to a clean desktop
Install in under a minute
A tiny webkit-free binary. Install from the signed apt repository and updates arrive with your normal system updates.
Click “Kill All Apps”
Every app is asked to quit gracefully first; anything that refuses is closed a moment later.
Start fresh
Your desktop, files, and session are untouched — you are never logged out.
Why Captain Kill Switch?
A clean close, not a crash
Well-behaved apps shut down properly — no crash-recovery or “restore tabs” prompts on relaunch. Anything still running after a couple of seconds is closed regardless, so save your work first.
Session-safe by design
An allowlist model only ever targets ordinary applications — never the shell, session infrastructure, or the operating system.
Instant and tiny
Native code with no background bloat; the sweep typically finishes in a second or two.
Install on Linux
Prefer the terminal? The cks command-line tool does the same job.