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henrypp/memreduct

★ 9,394CAudience · generalComplexity · 1/5Setup · easy

TLDR

Mem Reduct is a small Windows utility that monitors RAM and frees memory by clearing internal Windows caches, typically recovering 10, 50% of used memory, with portable and installer versions available.

Mindmap

mindmap
  root((memreduct))
    What it does
      Monitor RAM usage
      Clear memory caches
      Background cleanup
    Caches cleared
      Working set
      Standby page list
      Modified page list
    Installation
      Standard installer
      Portable INI mode
    Requirements
      Windows 7 to 11
      Administrator rights
    Audience
      Windows power users
      IT admins
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Things people build with this

USE CASE 1

Free up RAM on a sluggish Windows machine by clearing internal memory caches with one click.

USE CASE 2

Run a portable memory monitor on multiple Windows PCs without installing any software.

USE CASE 3

Keep RAM usage in check in the background while running memory-intensive applications.

Tech stack

CWindows API

Getting it running

Difficulty · easy Time to first run · 5min

Requires running as administrator to access system-level memory caches.

In plain English

Mem Reduct is a small Windows utility for monitoring and cleaning system memory. It runs in the background and can free up RAM by clearing various internal memory caches that Windows maintains, including the working set, standby page lists, and modified page lists. The author notes that the amount of memory freed varies, typically somewhere between 10 and 50 percent, because it depends on what Windows is currently holding in those caches. The application works on Windows 7 through Windows 11, including both 64-bit and ARM64 versions. Windows XP SP3 and Vista are also supported according to the README, with a note that some features only work on Vista and later. It requires administrator rights to run, because clearing system-level memory caches needs elevated permissions. It uses internal Windows APIs that are not part of the officially documented public interface, which is how it gets access to the lower-level memory structures. Installation is flexible: there is a standard installer, and there is also a portable version that does not require installation and stores its settings in an INI file next to the executable. Binaries are signed with a GPG key, and the public key and fingerprint are listed in the README for verification. The README is brief and does not describe the user interface in detail or explain how to schedule automatic memory cleaning. It covers system requirements, how to activate portable mode, and donation links. The project is maintained by a single developer under the handle Henry++.

Copy-paste prompts

Prompt 1
I'm running Mem Reduct and want to understand what it actually clears, explain what the working set, standby page list, and modified page list are and why freeing them recovers RAM.
Prompt 2
Set up Mem Reduct to run automatically on Windows startup and schedule a memory cleanup every 30 minutes, walk me through the settings.
Prompt 3
I want to verify the Mem Reduct binary I downloaded using the GPG signature in the README, show me the exact commands to import the key and check the signature on Windows.
Prompt 4
Compare Mem Reduct to the built-in Windows Resource Monitor for monitoring and managing RAM, when would I use one over the other?
Prompt 5
Explain why Mem Reduct requires administrator rights and what risks, if any, come from using undocumented Windows APIs for memory management.
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