Created a free intuitive app to browse S3

Browse, copy, share, sync and back up files on Amazon S3, MinIO, DigitalOcean Spaces and any S3-compatible storage – in an app that feels at home on your desktop.

Download for macOSOther platformsWindowsInstaller · auto-updates

Windows portableSingle .exe · no install

LinuxAppImage · x86_64

Version 0.5.0 · 22 October 2026

product-shots

invoices

Backups

Nightly media2:00 AM

Connections

Northwind Cloud

assets-eu

backups

media-assets

website-prod

website-staging

Local MinIO

Local

Home

Desktop

Documents

Downloads

Settings⌘,

product-shotsSearch

Northwind Cloud/media-assets/campaigns/product-shots10 items

Name ⌃Date ModifiedSizeKind

2026-autumn--–Folder

archive--–Folder

banner-wide@2x.jpgToday at 9:14 AM1.8 MBJPEG image

catalogue-2026.pdfToday at 8:51 AM14.2 MBPDF document

hero-loop.mp4Yesterday at 4:02 PM212.4 MBMPEG-4 movie

jingle.m4aOct 18, 2026 11:20 AM3.1 MBAAC audio

lookbook.zipOct 17, 2026 3:45 PM96.1 MBZIP archive

price-list.xlsxOct 14, 2026 10:03 AM88 KBExcel spreadsheet

product-feed.jsonOct 12, 2026 6:30 AM412 KBJSON

shoot-notes.mdOct 9, 2026 1:17 PM6 KBMarkdown

Uploading “spring-campaign.mov” – 412 MB of 1.2 GB

Show

Works withAmazon S3MinIODigitalOcean SpacesUpCloudAny S3-compatible endpointInside the appEverything you do in Finder, now in the cloud.

The things you reach for every day, plus a few Finder never learned.

media-assets

campaigns

hero@2x.jpg

hero-dark@2x.jpg

teaser.mp4

brand-guide.pdf

Desktop

Screenshots

budget.xlsx

notes.md

export.zip

config.json

hero@2x.jpg2

01Split view and drag & drop

Two buckets side by side, or a bucket next to your disk. Drag files between them to copy or move.

photos/IMG_2041.heic

↑photos/IMG_2042.heic

↓contracts/2026-10.pdf

↑reports/q3.xlsx

−drafts/old-notes.md

02Sync folders

One way or both ways. See every upload, download and delete before anything happens.

Nightly mediamedia-assets → Samsung T7 · every day at 2:00 AM

Done Failed, you got a notification Tonight

03Scheduled backups

Buckets to an external disk, daily, weekly or every few hours – even when the app is closed.

PDFMP4JPGCSVJSON

04Quick Look

Press space to preview images, video, PDFs and text right from the bucket. Arrow keys step through the folder.

MOVspring-campaign.mov412 MB of 1.2 GB · 8 parts in parallel

Queue2 waiting · pause, resume or cancel any time

05Built for big transfers

Large files upload in parallel parts with retries, from a queue you control.

prod⌘K

website-prodBucket

media-assets/campaigns/product-shotsFolder

Sync “Product images” nowSync

06Go anywhere with ⌘K

Type a few letters to jump to any bucket, folder or action.

Add an endpoint and an access key. Amazon S3, MinIO, Spaces, UpCloud – anything that speaks S3.

Your buckets appear in the sidebar. Open, preview, rename, copy and drag files like in Finder.

Keep folders in sync and let backups run on a schedule, even with the app closed.

Sidebar, column sorting, sheets, context menus and the shortcuts you already know. Light and dark mode follow your system.

Search a folder recursively, a whole bucket, or every bucket on a connection at once.

Open a file in any app. When you save it, S3 Browser uploads the new version for you.

Create time-limited share links, or make objects public or private, for one file or a whole folder.

Find multipart uploads that never finished but still take up paid storage, and abort them in one go.

Pin folders to the sidebar, open places in tabs and jump back to where you were.

Access keys are stored in the system keychain, never in plain text.

The app checks for a new version on start and updates itself in place.

Your Mac or PC shows up next to your buckets, so local files are one drag away.

Version 0.5.0 for every platform. Free, no account needed.

macOSUniversal · Apple Silicon & IntelS3Browser.dmgWindowsInstaller · auto-updatesS3Browser.msiWindows portableSingle .exe · no installS3Browser.exeLinuxAppImage · x86_64S3Browser.AppImage

macOS

The app isn’t notarized by Apple yet, so the first launch says it can’t be opened. Click Done, open System Settings → Privacy & Security and click Open Anyway. Or run:

Pick the installer to get automatic updates. The portable .exe runs without installing. If SmartScreen warns, click More info → Run anyway.

Make the AppImage executable with chmod +x S3Browser.AppImage and run it. It needs FUSE.