Auto-suspend inactive 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.
Reduce battery use, increase run-time 5–500%
Make your laptop run on battery for as long as your phone does, using roughly the same technique.
Reduce interaction latency on low-end CPUs
With fewer clients requesting processing power, there's more of it to go around where it's needed.
Reduce CPU temperature and fan noise
Save the tinnitus for old age.
Avoid apps plotting stuff behind your back
That Kali you're running in a VM is perfectly fine, but god only knows what Microsoft Windos is doing.
Suspend processes with well-known Unix signals
Or custom shell scripts. Decades of portable operating systems engineering at its finest.
Preconfigured for popular ‘hog’ software
Chromium, Firefox, JetBrains IDEs, qBittorrent, VirtualBox ...
Written in portable C99
Compiles and runs on any reasonably modern X11 platform, including GNU/Linux and *BSD.
Zero vulnerabilities or memory leaks
Guaranteed or your money back! (In case you do find any, please let us know.)
It won't break your system*
But if it does, you're free to keep all the pieces.
* Make sure to read the usage manual, particularly the section titled BUGS.
What Users are Saying
This is just very cool!
It's a real shame I cannot use it on Wayland.
A GNOME Desktop User
The proof of [this] program's value is its existence.
All this technology is completely unnecessary to a happy life.
Throughout a Unix system, easy things are easy and hard things are at least possible.
Eric S. Raymond
[...] When all else fails, read the instructions.