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Auto-suspend inactive X11 applications. 👀 💻 💤 🔋 Save battery by auto-suspending unfocused X11 applications.
Modern GUI applications tend to use significant system resources, such as CPU time, even when they're not being actively used.
XSuspender configurably suspends application activity (using Unix signal SIGSTOP or a custom shell script) shortly after its window(s) loses focus. When the window regains focus, the application is transparently resumed exactly where it had left off.