Index millions of local files in seconds with USN journals, deep file dialog docking, and an open plugin ecosystem.
Strict privilege boundaries ensure sub-millisecond search performance and uncompromised UI stability
Lertaro.ServiceRuns as LocalSystem in the background to directly read NTFS/ReFS USN Change Journals and $MFT tables, serving high-throughput read-only search queries via named pipes.
Lertaro.AppStandard user-session WPF application hosting the Quick Search bar, Full Search window, settings center, action menus, and plugin loader with zero elevated rights.
Lertaro.Service --hookIsolated privileged helper managing global keyboard hooks, bypassing UIPI security boundaries to attach seamlessly to elevated admin dialogs without crash propagation.
Deep desktop integration and native collaboration with external productivity tools
Fully optimized for Windows 10 and Windows 11, with native builds for both x64 (standard PCs) and ARM64 (Windows on ARM).
Automatic active path detection and docking support for Windows File Explorer, Total Commander, Directory Opus, and OneCommander.
Seamless Alt+P preview via QuickLook, local network sharing with LocalSend, and cross-ecosystem Flow Launcher plugin compatibility.
Technical explanations on architecture, system service, and workflow patterns
The background service reads low-level NTFS/ReFS USN Change Journals under LocalSystem without prompting frequent UAC dialogs in the UI, keeping full-disk change monitoring fast and isolating high privileges from the user interface.
Lertaro unites deep file dialog docking and jump fuzzy search (like Listary) with raw USN sub-millisecond indexing (like Everything), while offering a modern .NET 10 Plugin SDK and real-time Treemap disk space visualization.
The Installer automatically registers and manages the background indexing service. The Portable version runs immediately upon unzipping and allows one-click service registration inside settings if needed.
Never. Lertaro is 100% local and offline. There is zero telemetry, analytics reporting, or cloud communication of any kind.
Lertaro is free and open source. Code contributions, plugin development, and feedback are always welcome