Multi-credential, multi-bucket
Connect AWS, Hetzner, R2, MinIO, Storadera and more, then switch between accounts and buckets without leaving the app.
Open source · Local-first · AGPL-3.0
Every S3 bucket,
Every S3 bucket,
in one native app.
A desktop file manager for AWS, Hetzner, Cloudflare R2, MinIO, and any S3-compatible storage. Browse, upload, sync, and migrate across every bucket and credential — without the AWS console or half-finished CLI scripts.
Works with every S3-compatible provider
Amazon S3
Hetzner
Cloudflare R2
MinIO
Storadera
Backblaze B2
Wasabi
DigitalOcean Spaces
The toolkit
Everything you reach for, in one place.
The day-to-day of working in object storage, without juggling the AWS console, the CLI, and three web dashboards.
Full object control
Upload, download, move, rename, delete — plus folder operations, recursive delete, and batch actions across thousands of keys.
Background tasks
Copy, move, sync, and migrate run in parallel and resume where they left off — close the window and they keep their place.
Gallery & global search
Image and video thumbnails for visual buckets, plus instant search across every indexed file in every bucket.
Encrypted at rest
Credentials are sealed with AES-256-GCM using a key derived per install. Your keys never leave your machine.
Fully local, fully private
No account, no cloud, no telemetry. Metadata lives in an embedded PostgreSQL on your own disk.
Private by design
Your keys. Your data. Your machine.
S3 Administrator never phones home. There's no sign-up and no backend to leak. It boots its own embedded PostgreSQL, encrypts your credentials locally, and talks only to the storage providers you point it at.
0
Accounts required
0
Telemetry events
AES-256
GCM at rest
100%
On-device
How it works
Three steps to control.
01
Add a credential
Paste an access key for AWS, Hetzner, R2, or any S3 endpoint. It's encrypted and stored locally on the spot.
02
Browse your buckets
Every bucket and object appears instantly — folders, sizes, thumbnails, and search across the whole index.
03
Move data at will
Drag, sync, or migrate between providers. Long jobs run in the background and pick up exactly where they stopped.
Download S3 Administrator
Free and open source. Built natively for macOS on Apple Silicon — it boots its own database and opens in seconds.
Download the .dmg
macOS 12+
Apple Silicon (M1+)
~200 MB · v0.1.0
AGPL-3.0