Bucket Explorer: Backblaze B2 on your Mac

Bucket Explorer  ·  for Mac

Your Backblaze B2 buckets, right on your Mac.

Browse, upload and share files in B2 Cloud Storage with a fast, native app. Drag files in, copy a link in one click, and see exactly what your storage costs you.

Download on the Mac App Store See how it works

For macOS 14 or later · Works with any Backblaze B2 account

Bucket Explorer showing the files in a B2 bucket, with favorite folders and buckets in the sidebar
The Bucket Explorer menu bar panel with a drop zone and recent uploads

Menu bar

Upload without opening a window.

Bucket Explorer lives in your menu bar. Drop files on the icon and they go straight to the folder you picked, with the link already on your clipboard when the upload finishes.

Upload files, screenshots or whatever is on the clipboard.
Recent uploads stay one click away, ready to share again.
Settings listing three watched folders and the bucket folder each one uploads to

Watched folders

Folders that upload themselves.

Point Bucket Explorer at a folder on your Mac and choose where its files belong in B2. Anything new that lands there is uploaded for you, so your screenshots, exports and invoices are backed up without a second thought.

Each folder gets its own bucket and destination.
Only new files are sent. What was already there stays put.
The storage overview for a bucket, with billed totals, old versions and a monthly upload chart

Storage overview

See what you are really paying for.

B2 keeps every version of every file, and you pay for all of them. Bucket Explorer counts it all up, so the gap between what you see and what you are billed for is finally visible.

Old versions and unfinished uploads, counted per bucket.
Uploads by month, biggest folders, file types and largest files.
The Clean Up Old Versions sheet previewing twenty old versions and the space they free

Clean up

Clear out old versions, safely.

Choose how many versions of each file to keep and how old the rest must be. Bucket Explorer shows exactly what will go and how much space you get back before a single file is deleted.

Current files are never touched.
Cancel large uploads that never finished, in the same pass.

Everything in one place

A file manager that speaks B2.

The everyday things you would do in Finder, plus the ones only a storage bucket needs.

Tabs and favorites
Open folders in tabs and pin the ones you use most to the sidebar.
Quick Look
Preview images, PDFs and text files before you download them.
Share links
Copy one link or many. Private buckets get links that expire after a day.
File history
See every version of a file, then download or restore an earlier one.
Upload from any app
Right-click a file in Finder and send it to B2 from the Services menu.
Command line and AI agents
An optional bex tool and agent skill let scripts and coding assistants use your buckets.
The history of a PDF, listing six versions with Download, Restore and Delete for each

Put your B2 storage one click away.

A native Mac app that talks straight to Backblaze. Your key stays in your keychain, and nothing is tracked.

Download on the Mac App Store New to B2? Learn more

Requires a Backblaze B2 account. Bucket Explorer is an independent app and is not affiliated with Backblaze, Inc.