Storage Transfer Manager
Uploads and downloads you can actually trust.
Free • macOS, Windows & Linux
Every S3-compatible transfer — upload or download, single object or a whole batch — runs through the same transfer manager: multipart, bounded concurrency, automatic retry, and real-time progress you can actually read.
Real Progress, Not a Spinner
Smoothed transfer speed and ETA update live, for both single transfers and batch operations.
Bounded Concurrency
Batch transfers run with a concurrency cap, so 500 small objects don’t compete for bandwidth with the one 4GB file in the same batch.
Automatic Retry
A dropped connection partway through a multipart upload retries the failed part automatically, instead of failing the whole transfer.
Zero Telemetry by Default
Credentials, query logs, and record sets never touch any cloud server unless you opt in to encrypted sync.
Native Rust Performance
A native async driver pool built for low-latency queries — not an Electron wrapper.
One Workspace, Every Feature
Storage Transfer Manager sits right next to every other tool in the same app — no switching windows.