improve your PC's responsiveness and stability.

Process Lasso is a unique new technology that will, amongst other things, improve your PC's responsiveness and stability. Windows, by design, allows programs to monopolize your CPU without restraint -- leading to freezes and hangs. Process Lasso's ProBalance technology intelligently adjusts the priority of running programs so that badly behaved programs won't interfere with your ability to use the computer!

In addition, Process Lasso offers capabilities such as default process priorities and affinities, termination of disallowed processes, instance count limits, a system responsiveness graph, logging of processes, keep select processes running (auto-restart), and much more! A 64-bit build is available as a separate download.
Process Lasso is the definitive Windows process priority optimizer and automation software. Without any configuration, it can help prevent unruly processes from monopolizing your computer. It also supports numerous advanced Watchdog rules and power profile automation. Now you can take control of your PC, having its settings change with the applications you are actively using!

Process Priority and CPU Affinity Optimization
ProBalance Automatically temporarily lower the CPU priority class and/or I/O priority of monopolizing process(es) Automatically temporarily change CPU affinities of monopolizing process(es) Hyper-Threaded core avoidance More information and graphical CPU Eater demo at this page.
Process Settings Automation
Sticky (Persistent) CPU and I/O priorities Sticky (Persistent) CPU affinities Disallowed processes Instance limits Restart selected processes if they terminate, crash, or are closed Restart, terminate, change CPU affinity, or trim virtual memory of processes that consume too many CPU or memory resources (e.g. restart a process that has a memory leak)
Power Profile Automation
Energy Saver power saver and battery life extender Run at High Performance all the time, but drop back to Balanced when you go idle Run at Balanced all the time, but drop back to Power Saver when you go idle to save battery power Application Power Profiles - Switch power profiles each time given process(es) are running. Configure 'High Performance' like you want it, then set your favorite game or multimedia application to enter High Performance when it is run. Prevent Sleep option (list) sets processes that should prevent the PC and/or display from sleeping when they are running - or just use the GUI to temporarily keep your PC awake
Gaming / Multimedia
Gaming and Multimedia Mode to auto-optimize for game processes, when they are running
Advanced
Stand-alone core engine that can run as a system service Unique System Responsiveness metric with over a decade of real-world use and testing Ready for multiple users Need to disable CPU Core Parking? Check this Bitsum freeware until it becomes part of Process Lasso Minimal resource use and totally optional GUI that goes into a sleep-mode when minimized to the tray Logging of all actions taken, or all started processes Granular settings to disable features you do not want Unattended / silent installation Optional password protection on configuration Unlike many apps that will takeover your whole PC, Process Lasso makes no system setting modifications, does not inject itself into other processes, or make many changes at all Well tested on all supported platforms Automated updates So much more...

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In addition to ProBalance, there are countless features allowing the user to take full automated control of the processes on their PC. You can have a wide range operations performed, or settings applied, each time a process is run. Core optimization technologies allow you to choose on what CPUs/cores a process should run, as well as what their CPU priority class and I/O priority class should be. You can also disallow certain processes from running, log all processes run, and even set various other process rules. These rules, along with many others, include automatically restarting or terminating a process after it reaches some CPU or memory threshold. For license enforcement, you can limit the number of instances of a process that can be running. A gaming mode allows for easy process priority optimization for avid gamers.
GPU Optimization? Don't believe any software that says it can optimize your GPU. The best you could do is overclock it maybe, but that caries risks. At present there is no algorithm to optimize GPUs under Windows. In fact, Process Lasso, through its CPU optimization, actually helps to marginally optimize the behavior of the GPU, but this is an indirect benefit, not a direct one. If a direct method of GPU optimization ever becomes viable, you can be sure Bitsum will be the first to implement it. Until then, any product that makes such a claim is snake oil. Every claim we make we back up. There are so many sites, with so many lies, please - be careful who you do business with, and whose software you use.
We must not leave out our power scheme automation capabilities. These allow you to associate specific power schemes with particular processes on your PC. So, when you start a resource intensive process, you can enter High Performance power mode (for example). When it terminates, the previous power scheme is restored. We are adding new power scheme (aka power profile) automation capabilities all the time.

Process Lasso runs on all editions of Windows 2000, Windows XP, 2003, 2008, Vista, 7, 8, and 2012.

Process Lasso is written in native C++, not .NET. The background core engine that manages processes is completely independent from the graphical user interface, allowing you to keep process rules applied with almost no overhead. With Process Lasso, load time is instant and resource consumption is minimal.