Best S3 file browsers in 2026: free, web, Windows, Mac and Linux

The short answer: for daily work on Windows the classic picks are WinSCP (free, open source) and CS Browser, the app called S3 Browser until July 2026. On macOS, Cyberduck is the free choice and Transmit or ForkLift the paid ones. On Linux, Brows3 and Rclone UI give you a real desktop app. If you would rather not install anything, or you keep files in several providers, a web tool such as Nubbo, Filestash or S3 Manager runs in any browser. We checked every tool below on its official site or repository in October 2026, including versions, licences and prices.

S3 browsers compared at a glance

Prices are the vendors’ list prices in US dollars or euros as of October 2026, before tax where the vendor shows it that way.

What to look for in an S3 file browser

• Where it runs: a desktop app on one operating system, a browser tab on any computer or a terminal.
• Which providers it speaks: some tools only see AWS, others take any S3 endpoint such as Cloudflare R2, Wasabi, Backblaze B2 or DigitalOcean Spaces.
• Large buckets: listing tens of thousands of objects in one folder is where slow tools give up.
• Sharing: can you send someone a link without making the bucket public? Read how to share S3 files without public access.
• Previews: can you look at images, video, PDFs or documents before downloading?
• Administration: do you need to edit policies, lifecycle rules or CORS from the same tool?
• Licence: several “free” tools are free only for personal use.

Web-based S3 browsers (S3 client online)

AWS S3 console

The console is the default for anyone on AWS. It needs nothing installed and exposes every S3 setting, from storage classes and lifecycle rules to replication and access policies. It can create a presigned link for an object (“Share with a presigned URL”), and the AWS documentation caps those console links at 12 hours, while the CLI and SDKs go up to 7 days. It only shows buckets in your AWS account, so R2 or Wasabi buckets live in other dashboards.

AWS also publishes Storage Browser for S3, an open source React component in the Amplify UI library. It is not an app you open: developers embed it in their own web application to give users list, upload, download, copy and delete access to S3.

Provider dashboards

Each provider has its own web console. Cloudflare’s R2 dashboard, for example, lets you drag and drop files into a bucket. These consoles are fine for occasional uploads but each one only sees its own provider.

Nubbo

Nubbo is a web app that puts buckets from six provider types in one file browser: Amazon S3, Cloudflare R2, DigitalOcean Spaces, Wasabi, Backblaze B2 and any S3-compatible endpoint reachable from the internet, such as a public MinIO or Ceph server. A guided wizard checks your key, picks or creates the bucket and sets CORS for you when the key allows it.

How your data moves matters with any web tool, so here it is plainly:

• Uploads and single-file downloads use presigned URLs: the bytes travel between your browser and your bucket. Files from 100 MB upload in parts and can pause and resume.
• Multi-file ZIP downloads are assembled in your browser, which downloads each file straight from your bucket: Nubbo never sees the content.
• Thumbnails and watermarked gallery previews are written to your own bucket, under .nubbo-thumbs/.
• Listings come from an index of names and sizes, refreshed when you open a folder, which keeps folders with thousands of files fast.

On top of browsing, Nubbo adds what consoles leave out: share links for files and whole folders with optional password, expiry and download limit, file requests so anyone can upload into your bucket, galleries, previews for images, PDF, video, audio and Office files, a text and code editor, search across every bucket and transfers between buckets and providers.

Plans: Free gives you 2 bucket connections, 3 galleries, 3 file requests and unlimited share links. Personal (€7 a month in Europe, $7 elsewhere, VAT included) raises connections to 5, and Pro (€19 or $19) has no connection limit. Each connection is one bucket.

Limitations: there is no desktop sync, mounted drive, FTP or SFTP, no Azure Blob Storage or Google Cloud Storage, no bucket policy or lifecycle editing, no copy inside the same bucket and no public API.

Self-hosted web UIs: Filestash and S3 Manager

Filestash is an open source (AGPL-3.0) web file manager you run on your own server. It speaks S3 next to many other protocols, and the company sells commercial licences with SSO and support on top of the free self-hosted edition.

S3 Manager is a small Go web app under Apache-2.0, usually run with Docker. You configure one or more S3 accounts with environment variables and get bucket listing, uploads, ZIP downloads, time-limited download links and bucket policy editing. Version 0.11.1 shipped in October 2026.

If you used the console built into self-hosted MinIO, note that the MinIO community repository is archived and marked as no longer maintained, with MinIO pointing users to its AIStor products instead.

S3 browsers for Windows

CS Browser (formerly S3 Browser)

The app most people mean when they search “S3 Browser” was renamed CS Browser in version 13.5.5 (July 2026). It is still developed by Netsdk Software at s3browser.com, and version 13.6.3 came out on 3 October 2026. It runs on Windows 7 SP1 to Windows 11 and Windows Server up to 2025, and works with Amazon S3, S3 Glacier and S3-compatible storage.

The free edition is for personal use only and is limited to 2 accounts and 2 parallel tasks per queue. Business, government and military use needs a Pro licence, listed at $59.99 per computer (discounted to $49.99 when we checked), which also unlocks whole-bucket operations and version restores. Its strengths are bucket policies, ACLs, lifecycle rules, CORS, versioning and CloudFront tools in one Windows interface. There is no macOS or Linux version.

WinSCP

WinSCP is the free, open source (GPL) Windows client many people already use for SFTP and FTP, and it speaks S3 too. Its documentation lists S3-compatible services such as Backblaze B2, DigitalOcean Spaces, Cloudflare R2, MinIO and Wasabi. Version 6.7 was released on 14 October 2026. It is a good free S3 browser for Windows if you do not need bucket administration.

MSP360 Explorer (CloudBerry Explorer)

MSP360 Explorer, long known as CloudBerry Explorer, is a Windows and macOS cloud file manager with a free edition and a PRO edition at $59.99 per computer. Version 6.8 for Windows came out in February 2026. The macOS edition lists Amazon S3, Azure Blob Storage, Wasabi, MinIO and other S3-compatible services. PRO adds client-side encryption, compression, multithreaded transfers and upload rules.

S3 browsers for macOS

Cyberduck and Mountain Duck

Cyberduck is a free, open source (GPL) client for macOS and Windows, actively maintained (9.5.4 in August 2026). Besides Amazon S3 it speaks FTP, SFTP, WebDAV, SMB, Google Cloud Storage, Azure, Backblaze B2, Wasabi, OpenStack Swift, Dropbox, Google Drive, OneDrive and more, and a command-line version runs on Linux, macOS and Windows. It is a transfer client: there are no password-protected share pages or upload links for other people.

Mountain Duck, from the same team, mounts the same storage as a drive in Finder or File Explorer so any app can open the files. It is paid, with a trial.

Transmit 5

Panic’s Transmit is a polished Mac client for S3, FTP, SFTP and WebDAV that also connects to Backblaze B2, Azure, Google Drive, Dropbox and more. It costs $45 once, with a 7-day trial.

ForkLift 4 and Commander One

Both are two-pane file managers for the Mac that include S3. ForkLift 4 starts at $19.95 for a single-user licence with a year of updates and lists S3 and Backblaze B2 among its connections. Commander One, which Christian Ghisler approved as Total Commander for Mac, lists Amazon S3 and Backblaze B2; the PRO Pack costs $29.99 for one Mac, and the Mac App Store version has fewer features. If you searched for “Total Commander S3”: the official Total Commander Cloud plugin does not list S3, so on Windows use one of the tools above.

S3 browsers for Linux

• Brows3 is a free, open source (MIT) desktop app for Windows, macOS and Linux, built with Rust and Tauri. It works with S3, Cloudflare R2, Wasabi, DigitalOcean Spaces and MinIO, opens buckets by path when your key only covers one prefix, previews files and creates presigned links. Version 0.2.46 shipped in September 2026; it is young, so expect rough edges.
• Rclone UI is an Apache-2.0 desktop GUI for rclone on Windows, macOS and Linux, with scheduled tasks and mounts at start-up.
• FileZilla Pro has a Debian Linux build next to Windows and macOS and adds S3, B2, Azure and other cloud storage to the free FileZilla’s FTP and SFTP.
• Cyberduck’s command-line version and every web tool above also work on Linux.

Command-line S3 clients

• rclone (MIT, version 1.75.2 in October 2026) is the Swiss army knife: sync, copy, mount and checksum across dozens of S3 providers, including Cloudflare R2, DigitalOcean Spaces and Wasabi.
• The AWS CLI (aws s3 ls, aws s3 cp, aws s3 sync, aws s3 presign) is free and talks to other providers when you pass their endpoint with --endpoint-url.
• s3cmd (GPLv2) still works on Linux and macOS, but its last release, 2.4.0, dates from December 2023.

On your phone: S3Drive

S3Drive connects to your own S3 bucket from Android, iOS, desktop and the web, with end-to-end encryption compatible with rclone. Its Basic plan is free; paid plans start at €1.49 a month billed yearly.

Which S3 browser should you choose?

• You only use AWS and need to change settings: the AWS console.
• Windows, free and simple: WinSCP. Windows with deep S3 administration: CS Browser or MSP360 Explorer, with a paid licence for business use.
• Mac: Cyberduck for free, Transmit or ForkLift for polish, Mountain Duck to mount buckets.
• Linux: Brows3 or Rclone UI on the desktop, rclone in the terminal.
• Several providers and several computers, and you share or receive files with other people: a web tool such as Nubbo, which keeps the files in your own buckets.

Many people combine them: the provider console for configuration, a desktop or command-line client for bulk transfers and a web tool for daily work and sharing. If you are still choosing where to store the files, read S3 vs R2 vs Spaces vs Wasabi vs Backblaze B2.