FluentCleaner Classic is a free, open-source junk cleaner for Windows 10 and Windows 11 that quickly removes temporary files, browser caches, logs, thumbnails, and other unnecessary data. Built with a modern WinUI 3 interface, it delivers fast scans, smart cleanup, and a portable design without ads, subscriptions, or unnecessary registry cleaning.

FluentCleaner Classic comes in two flavors: the modern WinUI 3 edition with a sleek Windows 11-inspired interface, and FluentCleaner Classic—a lightweight, 3.5 MB portable version with a familiar CCleaner-style layout. Choose Classic if you prefer maximum compatibility, instant startup, a tiny download, or need a cleaner that runs on virtually any Windows PC without additional runtime components.

In This Post

Download FluentCleaner

File size: 47.6 MB

OS support: Windows

Windows

Download FluentCleaner 26.09.01 for Windows – x64 (Archive)

Download FluentCleaner 26.08.03 for Windows – x64 (Archive)

Download FluentCleaner 26.08.03 for Windows – Portable (Archive)

Download FluentCleaner for Windows – Home

Other

Download FluentCleaner 26.07.04 (Archive)

Download FluentCleaner 26.09.01 (Archive)

Key Features

Fast Junk File Cleanup: Quickly scans and removes temporary files, browser caches, logs, thumbnails, and other unnecessary data from your Windows system, freeing up valuable disk space in seconds.
Portable Design: Available as a lightweight 3.5 MB portable version that runs directly from USB drives or any location without installation, perfect for on-the-go system maintenance.
Modern WinUI 3 Interface: Features a sleek, Windows 11-inspired interface with smooth animations and intuitive navigation for an enhanced user experience on modern Windows systems.
No Ads or Subscriptions: Completely free and open-source with no advertisements, premium features, or subscription requirements—enjoy full functionality without any hidden costs.
Cross-Browser Support: Cleans temporary files, cookies, and cached data from popular browsers including Chrome, Firefox, Edge, and Opera to maintain optimal browsing performance.
Multi-Language Localization: Supports multiple languages including English, German, Bulgarian, Japanese, Italian, and Russian, making it accessible to users worldwide.

What’s New in Current Version

Introduced command-line automation for scripts and third-party tools in Classic version.
Added command-line documentation and examples under Options > Handoff / CLI.
Improved cookie deletion behavior to maintain list position.
Added Select all functionality to Cookie Manager lists.
Fixed issue where empty cleaner selections were not remembered after restart.
Improved DetectFile handling for 32-bit applications.
Added Azerbaijani localization.
Refreshed Brazilian Portuguese and French localizations.

Version History

Changes in 1.13.137 (2026-08-19)

[Improved] Further optimized FluentCleaner Classic’s internal core, making the app faster to start and more responsive during everyday use
[Added] If something is not working, you can now create a troubleshooting report from the About page. The TXT file is saved locally, can be reviewed before sharing, and is never sent automatically. You may attach it manually to a GitHub issue if needed.
[Added] Japanese, Italian, and Russian localizations
[Updated] Bulgarian, English and German localizations with the latest interface strings
[Added] Classic only: FluentCleaner Classic now offers an optional Supporter Edition acknowledgement. As a small thank-you, anyone who chooses to support development with an amount of their choice can add an optional name or organization under Options > About. No features are locked or changed.

Required Specs

Minimum

OS: Windows 7 or later

Technical Details

Software Name	FluentCleaner
Version	26.09.01
License	Open Source
File Size	47.6 MB
OS Support	Windows
Language	English, German, Azerbaijani, Brazilian Portuguese, French
Developer	builtbybel
Homepage	https://github.com/builtbybel/FluentCleaner
Changelogurl	https://github.com/builtbybel/FluentCleaner/releases
Last Updated	September 19, 2026

Setup Instructions

Show Installation Steps

Installation Steps

Click the download button above to get the installer for your operating system
Locate the downloaded file and double-click to run the installer
Follow the on-screen installation wizard to complete setup

Compatibility: Compatible with Windows 7 and later versions

Problem Solving

Show Common Issues

Issue: Installation fails → Solution: Run as administrator

Andy Zain Verified

Content Writer

8+ Years of experience

Andy Zain is a software content writer (8+ years, writing since 2015) who publishes download and install guides across major platforms and productivity categories. His goal is to help readers download the right version and install it safely using clear, up-to-date, source-backed instructions.