Portable build672 KB
A self-extracting executable for users who prefer a portable folder and manual placement.
SHA-256 606DCBA965AF417D97486B125723BBC5CCE92F830C7791DEF06B0C542A10DF50
Independent guide · Official publisher files
ISLC Download - Intelligent Standby List Cleaner 1.0.4.6
Download ISLC for Windows using the current portable or installer file hosted by Wagnardsoft. Check the version, file size and publisher SHA-256 before you run Intelligent Standby List Cleaner.
The buttons above point to files hosted on download.wagnardsoft.com.
Verify before running
ISLC download details
The ISLC download release page and files were checked against Wagnardsoft on July 20, 2026. File sizes below are based on the current publisher-hosted responses.
| Software | Intelligent Standby List Cleaner (ISLC) |
|---|---|
| Current version | 1.0.4.6 |
| Publisher | Wagnardsoft |
| Operating system | Windows; the publisher describes support from Windows 10 Creators Update and later |
| Distribution | Portable / self-extracting build and installer build |
| License | Free utility; version 1.0.4.6 adds license information and third-party notices |
| Official support | Wagnardsoft ISLC forum release thread |
| Last verified | July 20, 2026 |
Installer build1.15 MB
A conventional Windows setup executable for a guided installation workflow.
SHA-256 2E41635E917F9A51D1E7B52B6FF6C688368F8F7B0AF21EA50DC9DE456666D48D
What you are downloading
What is Intelligent Standby List Cleaner?
Intelligent Standby List Cleaner is a small Windows utility that monitors the standby memory list and available system memory. Windows uses standby memory as a cache, and that cached data is normally useful because it can make repeated access faster. ISLC does not treat every byte of cached memory as a problem. Instead, it watches the two thresholds configured by the user and purges the standby list only when both conditions are met.
The utility became popular with PC gamers who were investigating intermittent stutter on Windows 10 and later versions. Some systems may feel more consistent when an unusually large standby list is cleared before available memory becomes constrained. That does not mean ISLC is a universal FPS booster. It cannot replace enough physical RAM, repair a slow drive, update a graphics driver or fix a game engine. Its job is narrower: monitor memory conditions and request a standby-list purge according to your settings.
ISLC also exposes timer-resolution controls intended for advanced users. Changing timer behavior can affect power use and application timing, so it should be treated as an optional setting rather than a required optimization. Start with memory monitoring, observe the results, and change one option at a time. The most useful setup is the one you can explain and reverse, not a copied preset with no connection to your PC.
A trustworthy ISLC download page should make the publisher, version and package choice visible before asking you to run anything. This guide keeps the ISLC download linked to Wagnardsoft, displays both checksums and explains what the utility can and cannot change.
Standby list monitoring
See standby-list size and available memory while ISLC evaluates the thresholds you configured.
Conditional purging
The cleaner acts when both the standby-list and free-memory conditions are reached, avoiding constant manual purges.
Timer information
View current, maximum and minimum timer resolution and optionally apply a custom target when you understand the tradeoff.
Background operation
Run minimized in the system tray and let the monitor continue while you game or work.
Download and install
How to install ISLC on Windows
Both official builds reach the same utility. After the ISLC download finishes, the difference is how the files are placed on your system.
- 1
Select a build
Choose Portable if you want a self-contained folder, or Installer if you prefer a standard setup process. Do not download both unless you are comparing packaging.
- 2
Wait for the download
The button opens a 15-second preparation countdown and then starts the verified Wagnardsoft file. Save the executable somewhere you can find it.
- 3
Verify the file
Compare the SHA-256 hash with the value displayed above or in the official release thread. Windows PowerShell can calculate a hash with Get-FileHash.
- 4
Extract or install
Run the portable self-extractor and choose a stable folder, or run the installer and follow its prompts. Avoid moving an active portable folder after startup tasks are configured.
- 5
Start with defaults
Open ISLC, review the memory readings and confirm that monitoring works before enabling startup or changing timer resolution.
A publisher-hosted file and matching checksum improve provenance, but no website can guarantee that software is risk-free on every system. Keep Windows updated, review the digital prompts you receive, and create a restore point before system-level tuning.
Standby thresholdObserve first
Free memory thresholdMatch your RAM
Polling rateBalanced interval
Custom timerOptional
Monitor before tuningConfigure with context
Recommended ISLC settings are not one-size-fits-all
ISLC evaluates two memory conditions: the standby list must be at least a chosen size, and free memory must be lower than another chosen size. A configuration copied from a 16 GB gaming PC may be inappropriate for a laptop with 8 GB or a workstation with 64 GB. Use Task Manager and ISLC to observe typical available memory before choosing thresholds.
Polling rate controls how often the application checks conditions. A shorter interval reacts sooner but wakes the process more often. For most users, stability and understandable behavior matter more than chasing the lowest possible number. Timer resolution is a separate advanced option; leave it disabled until you have a specific reason to test it and can compare behavior before and after.
Read the complete ISLC settings guideWindows compatibility
Using ISLC on Windows 11 and Windows 10
The publisher positions ISLC for Windows 10 Creators Update and later Windows versions. Version history also contains Windows 11-specific timer-resolution fixes and options.
Current guide
Windows 11
Use the current 1.0.4.6 build. Review timer settings carefully because Windows 11 timer behavior has changed across ISLC releases.
Windows 11 download and setupPublisher target
Windows 10
ISLC was introduced for the Windows 10 Creators Update era and later. Run it with appropriate permissions and confirm monitoring values appear.
Follow the usage guideTroubleshoot
Counters or startup issues
If ISLC closes, shows zero values or fails to start at sign-in, use the official performance-counter and task-scheduler checks.
Open troubleshooting stepsCurrent release
What changed in ISLC 1.0.4.6
The current official forum post identifies version 1.0.4.6 as the active release and supplies two publisher-hosted downloads. The portable and installer files both returned successfully when checked on July 20, 2026. Wagnardsoft lists four changes for this version.
The main public content page can still display version 1.0.4.1 in its title, so the forum release thread is the more useful freshness source. This site records the checked date and uses the forum's current links and checksums rather than assuming the older article title is current.
See the complete ISLC version historyv1.0.4.6
- Added license information
- Added THIRD-PARTY-NOTICES.txt
- Added Show UI to the system tray icon
- Enhanced update-check robustness
Official source checked July 20, 2026
Straight answers
ISLC download FAQ
Answers to the questions that matter before downloading or changing Windows memory settings.
What is the latest ISLC download version?
The Wagnardsoft support thread lists ISLC 1.0.4.6 as the current version and provides portable and installer downloads. The links and file responses on this page were checked on July 20, 2026.
Is ISLC free?
Wagnardsoft distributes ISLC as a free Windows utility and accepts optional support. Version 1.0.4.6 adds license information and a third-party notices file.
Does ISLC work on Windows 11?
The version history includes Windows 11-specific timer-resolution changes and fixes. Use the current build, start with conservative settings and read the Windows 11 guide before enabling custom timer behavior.
Should I download the portable or installer version?
Choose portable if you want a self-contained folder and manual removal. Choose the installer if you prefer a conventional setup and installed-program workflow. Both files come from Wagnardsoft.
Is Intelligent Standby List Cleaner safe?
This site links to publisher-hosted files and displays the publisher's SHA-256 values, but it does not claim that any executable is universally risk-free. Verify the hash, keep Windows security active and download only from a source you trust.
Will ISLC increase FPS?
ISLC is not a guaranteed FPS booster. It may help some systems where memory standby behavior is associated with stutter, but it cannot fix every game, driver, storage or hardware bottleneck. Compare repeatable gameplay before and after using it.
What polling rate should I use in ISLC?
There is no universal best polling rate. A shorter interval checks more often, while a longer interval reduces wakeups. Begin with a moderate setting, confirm the monitor works and change only one variable at a time.
Where does this site get the ISLC files?
The download buttons point directly to download.wagnardsoft.com. ISLC Download Wiki does not repackage or modify the executables and is not affiliated with Wagnardsoft.
Ready to continue
Download ISLC 1.0.4.6
Choose the portable or installer build. Both buttons use the current publisher-hosted Wagnardsoft files verified for this guide on July 20, 2026.