How we verify this file manager guide

Every install command and asset pattern on this site must come from docs/RESEARCH.md or a fresh fetch of GitHub Releases, Homebrew formulae, or primary vendor docs. Invented winget ids are out of scope. Invented prices are out of scope.

Windows guidance prefers doublecmd-*-x86_64-win64.exe with MSI and portable zip verified as alternate names on the same tag. macOS guidance prefers the Homebrew cask double-commander when that formula resolves, plus cocoa DMGs from Releases. Linux guidance names the tar.xz archives present on the current tag.

Versions in the footer and stamp inject from the live GitHub release data at build time. Prose avoids hardcoded version pins so pages stay accurate between tags. Screenshots credit GPL or Creative Commons sources in figure captions.

Independence: Harbor Quill is not paid by Double Commander authors to rank for file manager. Affiliate partners are empty until monetize stage. Corrections welcome via contact.