Because DocFetcher is open-source, macOS Gatekeeper may initially block it.
Open the downloaded .dmg and drag DocFetcher to your folder.
In the bottom-left pane, right-click and choose Create Index From > Folder .
Best if you want to keep the application and its data in a single folder, which is useful for backups or external drives. 2. System Requirements
You can keep your searchable index on a USB drive and use it across different Mac or Windows machines without re-indexing.