Keepr
Backups for your Mac or PC. Every file. Every version. Kept.
An app for macOS and Windows.
Keepr keeps every version of the files you choose, on a drive, a NAS, a cloud folder or an S3 bucket, and lets you go back to any moment and restore any file as it was then. The first backup copies everything; after that each one stores only what changed, and every snapshot still restores as a complete copy. Backups can be encrypted, so the place that holds them can't read them.
See it on the Keepr website.
Download
Mac
For a Mac with Apple silicon (M1 or later) and macOS 13 or later.
- Download Keepr.dmg from the latest release.
- Open it and drag Keepr onto Applications.
- Open Keepr from Applications. macOS says it can't check the app for malicious software, because it isn't notarised by Apple. Click Done.
- Open System Settings › Privacy & Security, scroll down and click Open Anyway beside Keepr, then Open Anyway again and enter your password.
- In the same place, under Full Disk Access, turn Keepr on, so it can back up every folder.
It opens normally after that. The first time you use some features, macOS asks for permission: see First run.
Windows
Windows 10 or 11, 64-bit.
- Download Keepr_x64-setup.exe from the latest release and run it. It installs for you alone, with no administrator password.
- If Windows says it protected your PC, click More info, then Run anyway: the installer isn't code-signed.
- Open Keepr from the Start menu. There's no Full Disk Access to give, and passwords go in Windows' Credential Manager. A few things differ on Windows: see On Windows.
To uninstall, use Windows Settings › Apps; ticking Delete the application data removes Keepr's settings and history too. Your backups stay where they are.
Updates
Keepr checks for a new version once a day and asks before installing it. Check for Updates… checks now: Keepr › Check for Updates… on a Mac, or beside Website in Settings and in the notification-area panel on Windows. See Updates.
What it does
- Backup plans. Folders on the computer, a drive, an SMB share, a cloud folder or an S3 bucket, backed up every 15 minutes, hourly, daily, weekly or when you ask. Rules and
.gitignore files leave things out. Backup plans
- Every version. Every backup is a complete snapshot, kept by rules you set: every backup for a day, one a day for a month, one a week for a year, one a month for ever. Deleted files are kept for at least 90 days.
- Only what changed. Files are split by their content and each piece is stored once, compressed, however many files and snapshots share it. On a Mac, a still copy of the disk means files that change mid-backup are copied as they were at one moment.
- Encryption. A password and a recovery key; the destination sees only encrypted data.
- Restore. Step back through the snapshots, see every version of a file, Quick Look it (open it, on Windows) or compare it with the file on the computer, and restore to where it was or somewhere else. Right-click a file for the same and more, or show it in Finder or File Explorer. A size map shows what takes the space, in one snapshot or across every plan. Find a file in every backup at once, or open a backup made on another computer, Mac or PC, to restore from it there. Restore
- Destinations. Folders and drives, NAS shares, iCloud Drive, OneDrive and other cloud folders, Amazon S3, Backblaze B2, Cloudflare R2 and other S3 services, with helpers that make the bucket and a key that can only use it. Destinations
- In the menu bar (the notification area on Windows). Keepr keeps backing up with the window closed, waits for drives, batteries and hotspots, catches up after sleep, checks the backups can be read back, and tells you when something goes wrong. Day to day
- Ask. Ask an AI already signed in on your computer (Claude Code, Codex, Antigravity or GitHub Copilot) what takes the space and why a backup failed. It sees Keepr's figures and folder names, never files, and can suggest a change to a plan that Keepr checks and shows before you apply it, with Undo in Activity. Ask
Licence
Keepr is free software under the GNU General Public License, version 3 or later: you may use, share and change it, and anything you pass on must stay free under the same licence. See Licence and credits.
Building it
On a Mac: Rust, Node.js, pandoc (brew install pandoc) and Xcode's command-line tools.
npm install
make dev # run it with hot reload
make install-app # build it and put it in /Applications
On Windows: Rust (MSVC), Node.js and Visual Studio Build Tools; npm ci, then npx tauri dev or npx tauri build. See Windows.
Development has the rest: signing, the release DMG, the keepr command line, screenshots and where things live.
