Ultra Explorer

A file manager for all your clouds.

Browse, transfer, synchronize and analyze your files across Google Drive, OneDrive, S3, Dropbox, your NAS and 40+ other storages, side by side in one fast dual-pane app. Powered by rclone, with no server of ours in the middle.

Download · Website · Documentation · Pricing

▶ Watch the trailer (1:52)

https://github.com/user-attachments/assets/7ac566d6-2f84-4c23-afdf-7bea404a6d4b

Contents

• Why Ultra Explorer
• Features
  • Dual-pane explorer
  • 40+ storages
  • Transfer queue
  • Synchronizations
  • Space analysis
  • Multi-cloud search
  • Dashboard, settings and shortcuts
  • Docker, NAS and phone
• Download and install
• Free, Pro and Lifetime
• Privacy and security
• Supported storages
• About this repository

Why Ultra Explorer

Your files live everywhere: a laptop, a NAS, two or three clouds, an S3 bucket for archives. Ultra Explorer puts all of them in one window.

• Two panes, any two storages. Drag files from OneDrive to your NAS, or between two S3 buckets.
• Nothing changes by surprise. Conflicts always ask, and every synchronization can be previewed before it runs.
• See where your space goes. Four interactive maps of any folder, on any storage.
• Native and light. A Rust core with a native desktop app, or a self-hosted Docker server.
• Private by design. No telemetry. Your keys stay in rclone.conf on your machine and your files never pass through our servers.

Features

Dual-pane explorer

Two independent panels, each with its own storage, tabs and navigation history. Filter a folder as you type, open the context menu for copy, move, rename or delete, and drag files across panes to transfer them, from local to cloud or between two remote storages.

• Drag and drop transfers between any two storages
• No silent overwrites: every conflict asks you to overwrite, skip or keep both
• Tabs with saved paths and filters
• Recursive folder size on demand

Copy, move and organize with the context menu	Storage health and transfer activity at a glance

40+ storages

Ultra Explorer uses rclone to connect natively to more than 40 clouds, object stores, NAS and network protocols. Add a storage with a guided form, or import the rclone.conf you already have and keep using it from the command line.

All your storages, with availability and quota	Add a NAS, a cloud or a server in a few fields

See the full list in Supported storages.

Transfer queue

Every copy and move goes into a persistent FIFO queue that never blocks the interface. Follow live throughput, inspect each job (route, progress, speed, timeline), and pick up where you left off after a restart: the queue is stored in SQLite.

Synchronizations

Create a synchronization in six guided steps: route, behavior, rules and safety, schedule, review and preview.

• Safe Update copies new and changed files and never removes anything at the destination. Exact Mirror makes the destination match the source.
• Dry-run preview: see which files will be copied, updated or removed before anything changes.
• Guardrails: exclusion rules and a maximum-deletion threshold.
• Schedules: manual, interval, daily or weekly, with run history and logs.

Safe Update or Exact Mirror	Preview every change before it runs

Space analysis

Scan any folder, on any storage, and explore it as a sunburst, treemap, circle pack or tree. Zoom into a folder in one click and jump straight to it in the explorer.

Sunburst	Treemap

Multi-cloud search

Search up to eight storages at once, in parallel. Start from a preset (documents, images, archives…), refine with typed filters, and browse up to 50,000 results in a virtualized table with the exact location of every file.

Dashboard, settings and shortcuts

• Dashboard: connected storages, quotas, live throughput and recent activity.
• Light, dark or system theme.
• 10 languages, switched without reloading: English, French, German, Spanish, Italian, Portuguese, Chinese, Japanese, Korean and Russian.
• Keyboard shortcuts for the explorer, listed in Settings and shown next to menu actions (⌘ on macOS, Ctrl on Windows).

Docker, NAS and phone

The Docker edition serves the same interface to any browser. Run it on your NAS or home server and install it on your phone's home screen as an app (PWA), with a layout built for touch: stacked panes, a Select mode with an actions bar, and settings as a list.

Download and install

macOS with Homebrew

brew install --cask sudo-rahman/tap/ultra-explorer

Linux with Snap

sudo snap install ultra-explorer

Works on Ubuntu, Debian, Fedora, Arch Linux and any distribution with snapd. Updates install automatically.

Docker

1. Create a .env file next to your compose.yml with an admin password:

   ULTRA_ADMIN_PASSWORD=change-me
   

2. Save this as compose.yml:

   services:
     ultra-explorer:
       image: ghcr.io/sudo-rahman/ultra-explorer:latest
       restart: unless-stopped
       ports:
         - "7373:7373"
       environment:
         ULTRA_ADMIN_PASSWORD: "${ULTRA_ADMIN_PASSWORD:?Set ULTRA_ADMIN_PASSWORD in .env}"
         ULTRA_LOCAL_ROOTS: /mnt/local
       volumes:
         - ultra-data:/data
         - ./files:/mnt/local
       read_only: true
       tmpfs:
         - /tmp:size=64m,mode=1777
       security_opt:
         - no-new-privileges:true
       cap_drop:
         - ALL
   
   volumes:
     ultra-data:
   

3. Start it and open http://<your-server>:7373:

   docker compose up -d
   

The container runs unprivileged with a read-only root filesystem, and keeps its data in a single volume. Step-by-step guides, including installing the app on a phone, are in the documentation.

Unraid and TrueNAS

Unraid. The Community Applications template lives in Sudo-Rahman/unraid-templates. It runs the container as nobody:users (99:100) and maps your shares to /mnt/local. Before the first start, create its data folder with that owner:

mkdir -p /mnt/user/appdata/ultra-explorer && chown 99:100 /mnt/user/appdata/ultra-explorer

TrueNAS (24.10 and later). Until the app is listed in the catalog, use Apps › Discover Apps › Custom App:

• image ghcr.io/sudo-rahman/ultra-explorer with the release tag, user and group 568;
• environment variable ULTRA_ADMIN_PASSWORD, and port 7373;
• an ixVolume at /data, and a Host Path to the dataset to browse at /mnt/local.

Any non-root user works. The user you choose reads and writes the files in /mnt/local, so pick one with access to them.

Free, Pro and Lifetime

Ultra Explorer is free to download and use. Pro (subscription) and Lifetime (one-time purchase) unlock multi-cloud search, space analysis and scheduled synchronizations. See ultra-explorer.app/pricing.

Privacy and security

• No telemetry.
• Your credentials stay with you: API keys, OAuth tokens and passwords are stored in rclone.conf on your machine.
• Direct connections: files move between your device and your storages; they never pass through our servers.
• Verified releases: every release ships SHA256SUMS and build provenance attestations, macOS builds are signed and notarized, and in-app updates are signed.

Supported storages

Provider names and logos belong to their owners and only identify compatible services.

About this repository

This repository publishes the official Ultra Explorer installers, checksums and container images. The application is developed in a private repository; only the release workflows, product visuals, verified installers and runtime images are public here.

• Releases and release notes: Releases
• Container images: ghcr.io/sudo-rahman/ultra-explorer
• How releases are built and signed: RELEASING.md