A dual-panel file manager for macOS that lets you conveniently handle files across cloud storage providers.
FileFluss puts a left and a right panel side by side. Each panel can show a local folder or a connected cloud account, and the two are independent — even when you have the same cloud account loaded in both panels you can browse to different folders on each side. Drag and drop, copy, move, sync, compare, search — all between the two panels with native macOS performance.
- Open a different local folder, cloud account, or favourite on each side.
- Same cloud account on both panels? They navigate independently — and dragging between them does an in-cloud move/copy without re-uploading.
- Per-panel sidebar with favourites, locations, and connected cloud accounts.
- Active panel is marked with a thin accent line; toolbar actions and shortcuts target it.
Connect once in Settings → Cloud Accounts and the account appears in both panels' sidebars.
- pCloud
- kDrive (Infomaniak)
- OneDrive (Microsoft)
- Google Drive
- Dropbox
- Mega
- Koofr
- NextCloud
- WebDAV
- SFTP
- WordPress (Media Library)
- GMX Cloud (MediaCenter)
Cloud-to-cloud transfers, Google Workspace files auto-converted to DOCX/XLSX/PPTX on download, modification dates preserved.
- Drop files between panels — a Move or Copy? prompt asks once.
- Drop directly onto a folder row, the table background, or any breadcrumb in the path bar — files land where you expect.
- Right-click → Copy to Other Panel / Move to Other Panel for the no-prompt version.
- Side-by-side conflict resolution dialog with newer/older labels and Apply-to-All.
Two toolbar toggles for when you're in the flow and don't want the Move or Copy? prompt every time:
- Copy Mode forces every drag & drop to copy.
- Move Mode forces every drag & drop to move.
Mutually exclusive, and both reset on relaunch so a stuck Move Mode can't quietly destroy files across sessions.
Make one folder match another — local↔local, local↔cloud, or cloud↔cloud.
- Newer — copy files that are newer on the source.
- Mirror — make the destination identical, including deletes (with explicit confirmation).
- Additive — only copy files that are missing; never overwrite.
A pre-flight plan shows file counts, total bytes, and direction before a single byte moves. Byte-weighted progress so a single large file doesn't stall the bar. Cancel any transfer with confirmation.
A non-destructive side-by-side diff of two folders.
- Color-coded statuses: Different, Only on Left, Only on Right, Identical.
- Collapsible folders — a folder that exists only on one side, or contains many differing files, shows a single summary row that you expand to drill in.
- Filter chips narrow to one status (e.g. show only differences).
- Compare Date — opt-in checkbox flagging files whose size matches but modification date differs, with both modify and create timestamps and a Left newer / Right newer badge.
- Compare Again — runs against the panels' current folders. Browsing the panels while the compare window is open does not retrigger the scan, so no surprise re-enumerations of cloud trees.
- The compare window is movable and resizable, so you can keep both panels visible behind it.
Search the active local folder and every connected cloud account at once.
- Press ⌘F or click Search in the toolbar.
- Results stream in per source as each one responds.
- Double-click a result to navigate the active panel to its folder.
- Right-click to open a result explicitly in the Left or Right panel — the search window stays open so you can pick more.
- Movable, resizable window; size and position remembered across launches.
- Double-click a file in any panel — local or cloud — and it opens in the system default app (Word, Preview, Photos, etc.).
- Cloud files are downloaded to a temp cache the first time, so reopening is instant.
- Quick Look with Space, just like Finder.
- Local image and PDF rows show a real Quick Look thumbnail of the file content; cloud files show a colourful generic icon based on the extension.
- Folder size calculation in the background, never blocking the UI.
- Favourites pin frequently-used local and cloud folders to the sidebar.
- Hidden-files toggle per panel.
- Customisable toolbar (right-click → Customize Toolbar…).
- Light/Dark app icon variants — the dock icon swaps live when macOS toggles appearance.
- Built-in FileFluss Help under the Help menu (⌘?).
- macOS 14.0 (Sonoma) or later
brew install --cask rana-gmbh/filefluss/fileflussThis auto-taps rana-gmbh/filefluss and installs the cask in one step. To upgrade later: brew upgrade --cask filefluss.
Download the latest DMG from the Releases page and drag FileFluss.app into your Applications folder.
FileFluss uses XcodeGen to generate the Xcode project.
brew install xcodegen
xcodegen generate
xcodebuild build -project FileFluss.xcodeproj -scheme FileFluss -destination 'platform=macOS'- App icon (Light & Dark variants) — thanks to @JohnnyFireOne.
- File-type icons — redbooth/free-file-icons, © 2009 Teambox Technologies, S.L. (MIT License).
If you want to support the FileFluss project, please consider buying me a coffee.
FileFluss is released under the GNU General Public License v3.0.
Copyright © 2026 Rana GmbH.