Nimbo

Nimbo is a file browser for Amazon S3, MinIO, DigitalOcean Spaces and any S3-compatible storage. It lets you browse, copy, share, sync and back up files on those services in an app that works like the file manager on your desktop. It runs on macOS, Windows and Linux.

S3 has no Finder or Explorer of its own, so without a tool you are left with a web console or command-line scripts. Nimbo adds split view with drag and drop between buckets and your local disk, quick preview of images, video, PDFs and text, parallel multipart uploads from a queue, and a search that can cover a folder, a bucket or a whole connection.

Folders can be kept in sync one way or both ways, and buckets can be backed up to an external disk on a daily, weekly or hourly schedule, even when the app is closed. Access keys are stored in the system keychain. Nimbo is free, needs no account, and is made by Emil Moe in Denmark.