DocAttic is a local desktop app that gathers your documents from every folder, drive and backup into a single, clean, de-duplicated archive that lives entirely on your own machine.
It reliably de-duplicates — catching the re-saved and re-exported copies that ordinary filename/size tools miss. It reads from compressed and nested archives (zip, 7z, rar and more) so nothing is left behind, organizes everything into a clean folder structure, and never silently drops a document that exists in only one place.
Deliberately not cloud, not AI, and not a subscription. Your documents never leave your computer, there is no account and nothing is uploaded. It is desktop software you buy once and own, and all minor updates are free.
DocAttic is one of the Attic apps, which apply the same approach to email, photos, chats and contacts.
Platforms: Windows and Linux (macOS coming). One-time purchase.