DocFetcher vs Recoll

DocFetcher is a free, open-source desktop application for searching the contents of files stored on a computer. It presents selected results with a text preview and highlighted matches, and search results can be narrowed by file size, type and location. Its query syntax supports AND, OR and NOT, wildcards, phrase and fuzzy searches, proximity search and boosting. Supported content includes Microsoft Office files, Outlook PST, OpenOffice, PDF, EPUB, HTML, plain text, RTF, media metadata, Visio and SVG. It can search ZIP, 7z, RAR and tar archives, including archives nested inside other archives. Users create indexes for folders; the application detects changes while running, and a background daemon records changes while it is closed for processing at the next launch. Portable editions keep indexes and settings in the application folder and can be moved between computers. The maker says the application collects no private data and indexes nothing by default. It runs on Windows, macOS and Linux. The project is legacy software: no new features are planned, though bug fixes and support continue.

Recoll is free desktop search software that finds documents by their contents and file names. It indexes many common document formats and compressed files, including email attachments nested inside archives. Search supports Boolean queries, phrases, proximity, wildcards, and filters for file type or directory tree. Indexing can run periodically as a batch job or continuously for real-time updates. Users can search through a Qt desktop interface, a web browser, the command line, GNOME Shell, KDE KIO, or KRunner; the browser interface queries a Recoll index. A Python 3 extension can query or update that index. Recoll can index PDF attachments and annotations, extract custom XMP metadata, and apply OCR to image-only PDFs using Tesseract or ABBYY FineReader. It supports multiple languages and UTF-8, and users can choose a stemming language at query time. Linux and source are free under the GPL. A contribution is requested for the Windows binary, but no amount is stated. Some formats on Linux and macOS need external applications or libraries, and the Windows port lacks some features, including multithreaded execution.