Sync locations
- ●Cloud folders and drives — iCloud Drive, Google Drive, and OneDrive first
- ●Local folders on the Mac
- ●NAS-backed folders mounted through SMB, AFP, NFS, or other macOS-supported network filesystems
Open source · Early development
Keep your clouds interwoven.
Aetherloom is a native macOS app that keeps the same folders synchronized across your clouds, your Mac, and your NAS. Every location holds a full copy — lose access to one, and your files are still everywhere else.
iCloud DriveGoogle Drive
OneDriveDropbox
Local foldersNAS (SMB/AFP/NFS)
What it does
Choose folders. Aetherloom keeps them aligned, everywhere.
Pick folders — or eventually whole drives — and keep them in sync everywhere you keep files. It's more than convenience: when your files live in several places at once, no locked account, failed disk, or provider outage can take them from you.
What gets synced
- ●New and edited files, and new folders
- ●Renames and moves
- ●Deletes — using each provider's trash or recycle bin
- ●Conflicts — by preserving both versions
Safety first
Nothing happens without you.
Sync tools shouldn't surprise you. Aetherloom shows its work before touching your files — and pauses for review when a change set looks suspicious.
Never permanently deletes
During normal sync, deleted files move to each provider's trash or recycle bin where possible — never gone for good.
Outages aren't deletions
A provider outage, an unmounted NAS, a sleeping volume, or a disconnected disk is treated as unavailability, not as deleted files.
Conflicts keep both versions
When a file was edited independently in two places, nothing is overwritten. Both versions are preserved until you decide.
Pauses when things look off
A suspicious change set — like a mass deletion — pauses sync until you've reviewed exactly what would change.
Every change starts as a plan
Risky changes are shown as a sync plan first. Nothing is applied until you've seen what Aetherloom intends to do.
Verified writes
Destination state is verified before overwriting, so independently edited files are never clobbered.
A look inside
Native on macOS, through and through.
Sync Sets — Folders and drives you chose to keep in sync, grouped by mirror.
Local & NAS
First-class sync locations, not an afterthought.
A sync set that includes your Mac or NAS means a complete copy on hardware you own — plain files and folders you can open, move, or walk away with, no export required.
A mounted network share can disappear because the Mac slept, the network changed, credentials expired, or the NAS is temporarily unavailable. Aetherloom treats those states as provider unavailability — never as file deletion.
Deletes still follow the same philosophy: prefer trash, preserve conflicts, verify destination state before overwriting, and pause when the volume state is uncertain.
Current status
Early development, built in the open.
Aetherloom is young. The priorities below come first — follow along, open issues, or contribute on GitHub.
Follow the project →- Provider-independent sync engine
- Folder selection
- Sync plan preview
- Activity log
- Conflict detection
- Safe delete behavior
- Local folder support
- NAS-backed folder support
- iCloud Drive folder support
- Google Drive support
- OneDrive support
- Dropbox support
In progress Planned
A note on iCloud Drive
iCloud Drive doesn't offer a general-purpose cloud file API like Google Drive or OneDrive. Aetherloom's iCloud support works through the local iCloud Drive folder on macOS.
Not a backup replacement
Synchronized copies keep your files available if you lose access to a location, but sync isn't versioned backup. Keep an independent backup of files you can't afford to lose.
License
A license hasn't been chosen yet. The source is available to read on GitHub.