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Process Lasso
Process Lasso · Talbott, Tennessee, United States · founded 2002
What it is
Process Lasso is Windows software for automating process controls and managing system responsiveness. Its ProBalance feature dynamically adjusts running programs’ priorities during high CPU loads. Users can set CPU affinities, CPU sets, and priorities to persist when processes launch, and create rules for those settings, power profiles, and other actions based on thresholds or other criteria. Power plan automation can switch plans when specified processes run or the system is idle; Keep Awake can prevent sleep for a set time or while selected processes run. Listed algorithms include CPU Limiter, Instance Balancer, and Group Extender. The software can log process launches and other selected system activity. A background service called Process Governor enforces algorithms and rules, while the graphical interface is optional. A free plan is available, though some features are trial-limited and commercial use requires purchase within 30 days of deployment. Paid plans start at $4.95 per month. Compatibility is listed for Windows 7–11 and Windows Server 2012–2025.
For and against
For
- Adjusts process priorities during high CPU loads.
- Persists CPU affinities, CPU sets, and priorities.
- Automates power plans based on processes or idle time.
- Can run rules through a background service without its interface.
Against
- Windows only.
- Some features are trial-only in the free plan.
- Commercial use requires purchase within 30 days of deployment.
The verdict
Process Lasso combines automated process controls with power-plan rules, logging, and a background service. The free plan has feature limits, while paid plans start at $4.95 per month.
Who it suits
It suits Windows users who want to automate process priorities, CPU settings, or power plans. Its logging and rule controls may also suit people who want to review selected system activity.
Plans and prices
Single PC Monthly
1 PC
Read 21 Sep 2026 · bitsum.com
Single PC Annual
1 PC
Read 21 Sep 2026 · bitsum.com
Single PC Lifetime
1 PC
Read 21 Sep 2026 · bitsum.com
Entire Home Monthly
5 PCs
Read 21 Sep 2026 · bitsum.com
Entire Home Annual
5 PCs
Read 21 Sep 2026 · bitsum.com
Entire Home Lifetime
5 PCs
Read 21 Sep 2026 · bitsum.com
Process Lasso Pro Single PC Monthly
1 PC · home or commercial use
Read 14 Oct 2026 · bitsum.com
Process Lasso Pro Entire Home Monthly
up to 5 PCs with same owner · non-commercial
Read 14 Oct 2026 · bitsum.com
Process Lasso Pro Single PC Annual
1 PC · home or commercial use
Read 14 Oct 2026 · bitsum.com
On the record
- Activity logging
- Process Lasso can log and audit process launches and other selected system activity.bitsum.com · read 30 Sep 2026
- Algorithms
- Listed algorithms include CPU Limiter, Instance Balancer, and Group Extender.bitsum.com · read 30 Sep 2026
- API and extensibility
- The documented extensibility surface is command-line installation, imported INI rules, executable deployment and external-command Watchdog actions; no public SDK is listed.bitsum.com · read 14 Oct 2026
- Automation
- Rules can automate CPU affinities, priorities, power profiles, and actions based on process thresholds or other criteria.bitsum.com · read 30 Sep 2026
- Background engine
- The Process Governor enforces algorithms and rules as a stand-alone background service while the graphical interface remains optional.bitsum.com · read 14 Oct 2026
- Background service
- A stand-alone background service called Process Governor enforces algorithms and process rules, and the graphical interface is optional.bitsum.com · read 30 Sep 2026
- Changelog news
- Version 18.4.0 was released October 1, 2026 with an ARM64 build and fixes; the revision page also lists multi-GPU support, GPU metrics and consolidated rules as recent work.bitsum.com · read 14 Oct 2026
- Company
- Bitsum LLC, doing business as Bitsum Technologies, is a Tennessee software company founded in 2002 by Jeremy Collake and based in Talbott, Tennessee.cn.bitsum.com · read 14 Oct 2026
- Configuration profiles
- Separate configuration profiles store their own prolasso.ini files and can be switched from the File menu.bitsum.com · read 14 Oct 2026
- CPU affinity automation
- Persistent CPU-affinity rules can assign selected applications to chosen processor cores whenever they start.bitsum.com · read 14 Oct 2026
- CPU Limiter
- CPU Limiter rules trigger after a process exceeds a selected CPU threshold and temporarily remove a specified number of cores from its affinity.bitsum.com · read 14 Oct 2026
- CPU Sets
- The product supports persistent CPU Sets, described as a softer preferred-core mechanism than hard affinity.bitsum.com · read 14 Oct 2026
- Documentation depth
- The public manual covers algorithms, interface columns, deployment, configuration-file keys and detailed rule syntax with thresholds and actions.bitsum.com · read 14 Oct 2026
- Efficiency Mode
- Process Lasso can control and persist Windows 11 Efficiency Mode on a per-process basis.bitsum.com · read 14 Oct 2026
- Enterprise deployment
- Administrators can run processgovernor.exe as a service, deploy silently, import an INI configuration and use binaries from a network share.bitsum.com · read 14 Oct 2026
- Free and Pro limits
- The feature comparison lists CPU Limiter, Instance Balancer, power plan automation, Process Watchdog, and several other features as trial-only in Free and available in Pro.bitsum.com · read 30 Sep 2026
- Instance Balancer
- Instance Balancer distributes matching process instances across cores or NUMA nodes and supports regular-expression matching.bitsum.com · read 14 Oct 2026
- License model
- The EULA allows indefinite Free Edition use but disables some advanced features after a 30-day commercial trial and offers paid perpetual or subscription licenses.bitsum.com · read 14 Oct 2026
The review
Overview
Process Lasso is a Windows utility for automating how applications use system resources and power settings. It is best for people who want process rules to run consistently in the background, rather than just a view of what is running. Its controls are unusually broad for that job, but several important capabilities are only available on a trial basis in the free plan.
Key features
Persistent process controls
ProBalance adjusts running programs’ priorities during high CPU loads to help keep the system responsive. You can also save CPU affinities, CPU sets and priorities so they apply when a process launches, then create rules that change those settings or trigger actions based on process thresholds or other criteria. That makes Process Lasso a strong fit for repeatable tuning; it is more complexity than users who only need to inspect processes require.
CPU Limiter, Instance Balancer and Group Extender broaden its algorithm set. The catch is that CPU Limiter, Instance Balancer, Process Watchdog, power plan automation and several other features are trial-only in Free. Users who depend on those controls should treat Pro as the practical long-term option, not assume the free plan includes them indefinitely.
Power, logging and background operation
Rules can switch power plans when selected processes run or when the system is idle. Keep Awake can prevent sleep for a set period or while chosen processes are active. Process Lasso can also log process launches and other selected system activity, which is useful when a record of system behavior matters.
The separate Process Governor service enforces rules and algorithms without requiring the graphical interface to remain open. That suits unattended or routine operation, though users who only want a conventional task manager may not benefit from a service running in the background.
Pricing
Process Lasso has a free plan that most users may use indefinitely, but some features are limited by a trial period. Commercial use requires purchase within 30 days of deployment. That makes Free suitable for noncommercial use that does not rely on the trial-limited features, but less suitable for business deployment or ongoing use of the full control set.
- Single PC Monthly: $4.95 a month, a recurring subscription cancellable at any time for one PC.
- Single PC Annual: $24.95 a year, a recurring subscription cancellable at any time for one PC. Its lower total than twelve monthly payments makes it the more economical subscription for a single PC if you are comfortable paying annually.
- Single PC Lifetime: $39.95 a month for one PC. The listed term is monthly, so it does not read as a one-time lifetime purchase.
- Entire Home Monthly: $5.95 a month, a recurring subscription cancellable at any time for five PCs.
- Entire Home Annual: $36.95 a year, a recurring subscription cancellable at any time for five PCs.
- Entire Home Lifetime: $59.95 a month for five PCs; like the single-PC lifetime plan, the listed term is monthly.
The separate Pro plan options include single-PC monthly, annual and one-time lifetime billing, plus monthly and lifetime options for up to five PCs with the same owner for noncommercial use. The one-time lifetime options include all minor and major updates in perpetuity. These Pro options are shown with custom pricing; prices may not include taxes. Premium support is a Pro feature, and support is offered by email.
Platforms
Process Lasso supports Windows 7–11 and Windows Server 2012–2025. Its Windows-only scope is a clear boundary for anyone managing mixed-platform systems; it is not a cross-platform process-control choice.
Who it's for
Choose Process Lasso if you want Windows process priorities, affinities, power behavior and selected actions governed by persistent rules, especially when those rules should keep running without the interface open. It is less compelling if you only need monitoring, want native controls on another operating system, or need unrestricted access to Pro features without a paid plan.
Pros and cons
- Pros: Persistent CPU settings and threshold-based rules make recurring process tuning repeatable.
- Pros: The Process Governor service can enforce rules while the graphical interface is closed.
- Pros: Power-plan triggers, Keep Awake and activity logging extend control beyond process priority alone.
- Cons: Several useful features, including power plan automation and CPU Limiter, are trial-only in Free.
- Cons: Windows support excludes users seeking process control across macOS or Linux.
- Cons: The listed lifetime plans show monthly prices, unlike the separate Pro lifetime options described as one-time payments.
Alternatives
For a broader set of platform options, Glances is a free, open-source system monitoring tool for Windows, Linux, macOS, Android, web, API and self-hosted use; optional features require extra dependencies. Choose it when cross-platform monitoring matters more than Process Lasso’s process rules and automation.
PM2 is a free process manager with a real-time web interface and also offers a Plus plan at $79 a month. It is an alternative to consider when a process manager with web monitoring is the priority.
For Windows monitoring, Ambih Monitor offers live monitoring and core features free, with its free plan limited to five-session history per project; Pro is $10 a month, billed annually, for unlimited session history. Pick it when monitoring history is more relevant than persistent process controls.
AppControl is free to download and use on Windows, with no email or registration required; optional premium features may be introduced in the future.
bottom (btm) is a free process monitor for Windows, Linux and macOS.
ManageEngine Free Process Manager is free in perpetuity and offers a Windows EXE 32-bit download.
iotop is a free Linux option that requires root access.
Monit is free, open-source software for Linux, macOS and self-hosted use under the GNU Affero General Public License.
Browse more options in Process Monitoring Software and PC Optimization Software.
Verdict
Process Lasso is the right choice for Windows users who need persistent, rule-driven control over process behavior and power settings, with a background service to keep those rules active. Its strongest reason to choose is that breadth of automation; its strongest reason to look elsewhere is the trial-limited Free feature set, or the Windows-only focus.