Backblaze B2, mounted as a drive.
Mount Backblaze B2 — the S3-compatible cloud at a fraction of S3's price — as a native drive on macOS, Windows, and Linux. Application key auth, bucket-scoped mounts, and the same on-demand streaming experience as the rest of the S3 family.
— What you get
B2 buckets as drives.
Buckets mount as drives.
Every B2 bucket you can access shows up in Finder, Explorer, or your Linux file manager. Open files in any app and save back to B2 directly. No upload step.
Bucket-scoped mounts.
Mount the full account or restrict to a single bucket. Application key permissions flow through — ExpanDrive can't do anything your B2 credentials can't.
Stream on demand.
No full sync. B2 objects stream when you open them, cache locally for fast re-open, and live in the cloud the rest of the time. Pin folders for offline if you need them.
— Power features
B2 with S3-grade tooling.
Application Key auth — keychain stored.
Generate a per-app Application Key in the B2 console with the permissions ExpanDrive needs. Secret stored in your OS keychain. Never persisted to disk in plaintext.
S3-compatible API path.
B2 ships an S3-compatible endpoint. ExpanDrive uses it — meaning the same connection capabilities as Amazon S3: bucket-scoped mounts, sub-path scoping, region-aware endpoint configuration.
— Cross-platform
B2 on every OS.
macOS
Apple File Provider extension. Buckets appear in Finder. Apple Silicon native.
Windows
User-selectable drive letter per bucket. Signed MSI installer.
Linux
Native .deb / .rpm packages. Buckets mount at standard Linux mount points and work with every Linux app — including dev tools and CLI workflows.
— S3-compatible siblings
Comparing object-storage clouds?
B2's competition for the S3-alternative buyer. Same ExpanDrive connector handles all of them.
Amazon S3
Connect to Amazon S3 or any S3-compatible storage as a network drive — multi-threaded transfers and full bucket browsing on Mac, Windows, and Linux.
Wasabi
Connect to Wasabi cloud storage as a network drive with ExpanDrive - fast, inexpensive S3-compatible object storage.
IDrive e2
Connect to IDrive e2 S3-compatible cloud storage as a network drive with ExpanDrive - fast and affordable object storage.
— Common questions
Common questions about B2 on ExpanDrive.
Application keys, B2 pricing, S3-compatible endpoints, and what happens when you outgrow B2's free tier.
Need a File Orchestration Platform, not just a drive?
The cloud connectors mounting your drive on macOS, Windows, and Linux are the same ones that run on Files.com's high-performance cloud File Orchestration Platform — used by 4,000+ businesses including Equifax, Rag & Bone, Cognizant, and Michelin. If you need automations, audit logs, SFTP / AS2 servers, or compliance reporting on top of your file estate, that lives there.
Try it free.
Mount everything.
Free for personal use. Runs on every Mac, PC, and Linux box built in the last decade.