Mount any S3-compatible object storage bucket directly into Windows Explorer as a native drive. High-performance IO, full read/write support — works with AWS S3, Cloudflare R2, Intrvll Object Storage, MinIO, and any S3-compatible endpoint. Free, forever.
No third-party drivers, no complex configuration. S3Mounter hooks into the Windows Shell namespace extension API so your bucket looks and behaves like any local drive.
Windows Integration
Native Windows Explorer Drive
Your S3 bucket mounts as a lettered drive (e.g. Z:\) visible in File Explorer, the command line, and every application on your system. No extra tools needed — drag, drop, open, save, delete exactly like a local or mapped network drive.
Shell namespace extensionDrive letter mappingContext menu integrationWorks in every app
Performance
High-Performance IO
Concurrent multi-part uploads and ranged GET requests. Chunked streaming for large files. Local metadata cache keeps directory listings instant.
Compatibility
Any S3-Compatible Endpoint
Works with AWS S3, Cloudflare R2, MinIO, Backblaze B2, Wasabi, Intrvll Object Storage, and any S3-compatible API. Path-style and virtual-hosted-style addressing both supported.
Security
Secure Credential Storage
Access keys and secrets stored in the Windows Credential Manager — never in plaintext on disk. TLS 1.3 in transit. Per-bucket credential profiles.
Setup
Multiple Bucket Profiles
Configure as many bucket profiles as you need. Each profile gets its own drive letter, credentials, and endpoint. Switch or mount/unmount individually from the system tray.
Developer
CLI & Scripting Support
Mount and unmount buckets from the command line or PowerShell scripts. Automate drive mapping on login, in CI pipelines, or from scheduled tasks — no GUI required.
$s3mounter mount --profile intrvll-prod --drive Z
UX
System Tray App
Lightweight system tray icon for quick mount/unmount, transfer progress, and connection status. Auto-reconnect on resume from sleep.
Getting started
Running in three steps
01
Download & install
One-click installer. No configuration wizard, no reboot required. S3Mounter integrates directly into Windows Explorer via the Windows Shell namespace extension.
02
Add your bucket
Enter your endpoint URL, access key, secret key, and bucket name. Supports path-style and virtual-hosted-style addressing. Compatible with any S3 API.
03
Browse as a drive
Your bucket appears as a mapped drive in File Explorer. Drag, drop, copy, delete — it works exactly like a local or network drive.
S3 in Explorer. Free forever.
Download S3Mounter and mount your first bucket in under two minutes. No account required — just an S3 access key.
