BucketBay is a desktop manager for S3-compatible object storage. Save a connection once, then browse and transfer your buckets the way you work with any other folder.
One window for every bucket you work with, whoever hosts it.
Large files, flaky links and folders that belong together. BucketBay is honest about all three.
Amazon S3, Cloudflare R2, MinIO, Backblaze B2, Wasabi, DigitalOcean Spaces, or any other S3 endpoint. Keep as many connections as you need and switch without re-entering keys.
Large uploads are split into parts, so a failure resumes from the part that stopped instead of starting over. Downloads land in a temporary file and are renamed only when complete.
Pick files, pick a folder, or drag anything straight onto the window. A folder keeps its structure on the way up, so what you see on your computer is what you get in the bucket.
Every upload is shown to you first — the file count, the total size and exactly where it is going — before a single byte moves. Cancel from that screen and nothing has happened.
Create a temporary link to any object and choose how long it stays valid, or save a bucket's public address once and copy a permanent link to anything inside it.
Secret keys are never stored in the application database. They go to your operating system's credential store where one is available, and are otherwise encrypted on your own machine.
No account to create and no service in the middle. BucketBay talks straight to the endpoints you give it.
Enter your access key, secret key, region and endpoint. Presets fill in the endpoint for the common providers, and a test button confirms it before you save.
Move through prefixes like folders, inspect metadata and versions, then queue uploads and downloads and watch them run with live speed and progress.
Create an expiring link for anything you need to hand to someone else, or copy a permanent public link for the buckets you already serve openly.
If yours is not here, write to us and we will answer.
Any service that speaks the S3 protocol. Presets are included for Amazon S3, Cloudflare R2, MinIO, Backblaze B2 and Wasabi, and you can enter a custom endpoint for anything else, including a server on your own network.
No. There is no account, no sign-in and no BucketBay server. The app connects directly to the storage endpoints you configure and to nothing else.
Secret keys never go into the application database. They are stored in your operating system's credential store when one is reachable, and otherwise encrypted on your own machine with a key that also stays there. Nothing is uploaded.
No. Files move between your computer and the storage endpoint you chose. BucketBay collects no telemetry and sends no analytics.
Uploads above the multipart threshold keep their part progress, so retrying continues from the part that failed instead of re-sending the whole file. Downloads resume the same way, and a partial download is never mistaken for a finished file.
Yes. Choose a folder from the picker or drag it onto the window, and everything inside it is uploaded with its structure intact under the path you are viewing. You see the file count and total size before anything is queued.
Some providers issue access keys that are limited to a single bucket. Such a key cannot list the others, which is expected rather than a fault — name that bucket on the connection and BucketBay opens it directly.
It is the address a bucket is served at when you have made it publicly readable. The S3 protocol has no way to report that address, and every provider forms it differently, so BucketBay cannot discover it. Paste it once per bucket and it is remembered.
Up to seven days. That is a limit of the S3 signature format itself, not a BucketBay restriction, so the app clamps longer requests and tells you when it has.
Windows 10 version 1809 or newer on a 64-bit machine. BucketBay is available in English, Simplified and Traditional Chinese, Japanese, Korean, French, German, Spanish and Italian.