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Free, open-source system cleaner and security scanner for Windows, macOS, and Linux that reclaims disk space, removes malware, and hardens privacy settings.
Kudu is a 100% free, open-source, and transparent system cleaner and security scanner for Windows, macOS, and Linux, built as a no-ads, no-telemetry alternative to closed-source cleaners. It combines cleaning and optimization tools — including a system cleaner for temp files and caches, a browser cleaner, an app cleaner, a registry cleaner, a startup manager, a disk analyzer with an interactive treemap, a Windows debloater, and a bulk software updater via winget — with security and privacy features like a malware scanner with heuristic analysis and Windows Defender integration, a Privacy Shield covering 30+ Windows privacy settings, and secure file deletion that overwrites data before removal. It also includes real-time performance monitoring (CPU, memory, disk, network, S.M.A.R.T.), system restore point creation, cleaning history tracking, scheduled scans, a one-click clean mode, and a scriptable CLI mode requiring no GUI. Cleaning rules are defined as simple JSON files, so contributors can add support for new apps without writing code. Kudu is available in 30 languages and released under the MIT License.
