Every bucket, one window.

A fast Mac app for browsing and moving files across Amazon S3, Cloudflare R2 and Hetzner Object Storage.

For Apple Silicon Macs, macOS 13 or later.

Amazon S3

3 itemslaunch-teaser.mp4

This is a live preview with sample files. Click a folder to open it.

Works with

Features

Everything your buckets need.
Nothing they don't.

Connect Amazon S3, Cloudflare R2 and Hetzner Object Storage once. Switch between them without logging in again or opening another tool.

Large files move in parallel pieces. Pause, resume, and let failed pieces retry on their own.

Press ⌘K to jump to any bucket or folder, or run a command without reaching for the mouse.

Drop files or whole folders onto the window to upload them. Drag between two connections to copy from one provider to another.

Create, rename and delete folders. Before a big move or delete, Kelp tells you how many files it will touch.

Look at images, text and video right in the app, without saving them to your Mac first.

Performance

Kelp is designed around one rule: the interface never waits for the network.

RustA native core does the heavy lifting, so the window never freezes.
4 at onceFiles transfer in parallel, and large ones move in parts.
100,000files in a folder still scroll smoothly. Only visible rows are drawn.

The same place macOS keeps your passwords. Kelp never writes them to a settings file or a log, or sends them anywhere except your storage provider.

For Apple Silicon, macOS 13 or later.

Download coming soon

Download the .dmg file.
Open it and drag Kelp into your Applications folder.
Open Kelp. If macOS says it can't check the app, open System Settings → Privacy & Security and choose Open Anyway.