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CCleaner vs ReactOS

Professional comparison and analysis to help you choose the right software solution for your needs.

CCleaner icon
CCleaner
ReactOS icon
ReactOS

CCleaner vs ReactOS: The Verdict

⚡ Summary:

CCleaner: CCleaner is a popular free system cleaning and optimization tool for Windows. It removes unnecessary files to free up hard disk space, cleans the registry to improve system performance, and has other useful utilities like securely deleting files.

ReactOS: ReactOS is an open-source operating system that aims to be binary-compatible with Windows applications and drivers. It provides a Windows-like desktop environment and functionality for users looking for a free and open alternative to commercial Windows operating systems.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature CCleaner ReactOS
Sugggest Score — —
Category Os & Utilities Os & Utilities
Pricing Freemium Open Source

Product Overview

CCleaner
CCleaner

Description: CCleaner is a popular free system cleaning and optimization tool for Windows. It removes unnecessary files to free up hard disk space, cleans the registry to improve system performance, and has other useful utilities like securely deleting files.

Type: software

Pricing: Freemium

ReactOS
ReactOS

Description: ReactOS is an open-source operating system that aims to be binary-compatible with Windows applications and drivers. It provides a Windows-like desktop environment and functionality for users looking for a free and open alternative to commercial Windows operating systems.

Type: software

Pricing: Open Source

Key Features Comparison

CCleaner
CCleaner Features
  • Registry cleaning
  • Junk file removal
  • Browser privacy cleaning
  • Startup program management
  • Uninstall tool
  • Disk analyzer
  • System restore point creation
ReactOS
ReactOS Features
  • Windows NT architecture
  • Supports Windows drivers and applications
  • File systems support (FAT, NTFS, EXT2/3)
  • Networking stack
  • Partial Win32 API support

Pros & Cons Analysis

CCleaner
CCleaner

Pros

  • Easy to use interface
  • Lightweight and fast
  • Cleans a wide variety of junk files
  • Improves system performance
  • Free version available

Cons

  • Contains adware in free version
  • Privacy concerns with data collection
  • Can cause issues if registry cleaned incorrectly
  • Requires manual configuration for best results
ReactOS
ReactOS

Pros

  • Free and open source
  • Provides a Windows-like experience
  • Runs many Windows apps natively
  • Active development community

Cons

  • Limited hardware support
  • Not all Windows APIs implemented
  • Stability and compatibility issues
  • Lacks many modern features

Pricing Comparison

CCleaner
CCleaner
  • Freemium
ReactOS
ReactOS
  • Open Source

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Learn More About Each Product

CCleaner
CCleaner
Reviews, pricing & alternatives →
ReactOS
ReactOS
Reviews, pricing & alternatives →

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