The most powerful S3 Client for macOS


Seamless access to S3-compatible storage from within any application.

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Introducing v2021.5.1 for macOS 11 Big Sur
Released May 3rd, 2021

Revolutionary macOS 11 File Provider

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macOS 11 Big Sur provides revolutionary technology that enables kernel-level on-demand file sync. S3 Pro is the first app to implement a File Provider that lets you access and browse cloud storage without taking up disk space. When you open or access files APFS triggers S3 Pro to download only the content you want, on demand.

Deeply integrated server-side search

S3 Pro fully integrates with Spotlight search for content you've previously browsed along with a comprehensive full-library server side search inside the dropdown. Easily get right to what you need to with high speed server-side search.

For help installing or uninstalling please visit our documentation.

Usage is subject to our License agreement.