https://bitsum.com/howfree/

How Free is Process Lasso?
Did you know Process Lasso was the FIRST utility of its kind? Bitsum literally created the real-time PC optimization market and more. We invented the famous ProBalance algorithm and were one of the first to notice and do something about the performance degradation caused by OS controlled CPU core parking (Intel later moved core parking control to the hardware due to this!). We even developed a remarkably simple, accurate responsiveness metric to measure the impact of our technologies. With your support we’ll continue breaking new ground!

Downloads
Process Lasso 32-bit
Process Lasso 64-bit
Feature Process Lasso Free Process Lasso Pro
ProBalance YES YES
Gaming Mode 2.0
(now Performance Mode) YES YES
Persistent process settings YES YES
Disallowed processes YES YES
ProBalance I/O restraints YES YES
ProBalance CPU Affinity based restraints YES YES
IdleSaver – Save energy without sacrificing Performance YES YES
Temporary Keep Awake YES YES
Foreground Boosting YES YES
Control Power Profiles YES YES
Control CPU Core Parking YES YES
SmartTrim – The first-ever intelligent RAM optimizer YES YES
Automate Power Profiles YES (partial) YES
Automate CPU Core Parking YES (partial) YES
Single-Threaded Performance mode YES (partial) YES
Application Power Profiles TRIAL PERIOD ONLY* YES
Process Watchdog (memory and CPU limits) TRIAL PERIOD ONLY* YES
Instance count limits TRIAL PERIOD ONLY* YES
Automatic Gaming Mode TRIAL PERIOD ONLY* YES
CPU throttling TRIAL PERIOD ONLY* YES
Anti-sleep processes TRIAL PERIOD ONLY* YES
Keep processes running TRIAL PERIOD ONLY* YES
Core engine as service NO YES
Set custom CPU affinities for ProBalance NO YES
TweakScheduler tool NO YES
MultiMedia Scheduler tool NO YES
Access to older versions NO YES
Premium Support NO YES
Solicitation ‘nag’ at program start YES NO
Everything else MAYBE YES