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 (Process Balance) technology intelligently adjusts the priority of running programs so that badly behaved or overly active processes won't interfere with your ability to use the computer!
Once you install Process Lasso, it'll just start working. More advanced users can tweak the configuration, but you needn't touch anything to have it instantly improve your system responsiveness and prevent stalls in high load situations.
For network admins, Proces Lasso works wonderfully on Terminal Servers and in multi-user environments. We have many clients that have been using Process Lasso on their Terminal Servers for years.
Best of all, Process Lasso is written in native C++, not .NET. This means it consumes very few system resources - considerably less than any similar software.
Process Lasso Features
Prevent processes from monopolozing the CPU(s)
ProBalance dynamic priority optimization CPU throttling (new)
Save process priorities for future instances
Save process CPU affinities for future instances
Gaming mode Foreground boosting
Limit allowed program instances
Disallow programs from running Log all programs run
Auto-restart processes if they are terminated (new in beta)
System responsiveness graph Stand-alone core engine
Available in x86-32 and x86-64 builds
Extremely low RAM and CPU use
Source : Softdown32