Based on the provided search results, SCleaner (formerly known as Portable Windows System Cleaner) is a free, open-source, and lightweight tool designed for cleaning up temporary files, caches, and other junk files from a Windows PC.
Key Features: It is highly portable, with a file size under 400KB, making it an extremely small and efficient utility.
Purpose: It focuses on essential system cleaning tasks to improve performance without unnecessary features (no bloat).
Functionality: It targets temporary files and cache, helping to remove the accumulation of junk that builds up over time. Open Source: The tool is open-source.
Note: While SCleaner is a specialized lightweight tool, the search results also highlight Microsoft PC Manager (an official, free tool for comprehensive system maintenance) and BleachBit (a popular, open-source alternative) as other options for 2026, often preferred over formerly popular tools like CCleaner, which are now criticized for heavy pop-ups and background usage.
If you are looking for a very small, portable utility, SCleaner is designed for that specific purpose. If you’d like to explore other options, I can: Compare it to BleachBit’s features Show you where to get Microsoft PC Manager Let me know which of those options interest you. SCleaner: Lightweight Windows Cleaner – NeoTeo