Introduction

Opndrive is an open-source web UI for Amazon S3 and S3-compatible storage. Think Google Drive or Dropbox, but instead of your files living on someone else’s servers, they live in a bucket you own and control.

Why It Exists

Most cloud storage products ask you to trust them with your files. Opndrive inverts that: you connect your own S3 bucket, and every file operation happens directly between your browser and AWS. There’s no Opndrive-operated server in between, and no Opndrive-operated database - your AWS credentials live in your browser’s localStorage, nowhere else.

What You Get

• A file browser that behaves like a native file manager: folders, grid/list views, search.
• Upload with progress tracking, including multipart uploads for large files and multiple upload strategies (see Uploading Files).
• In-browser preview for images, PDFs, and text files, both as a quick modal and as a shareable full-page route (see Previewing Files).
• Rename, delete, and move for files and folders.
• Dark and light themes.
• Support for any S3-compatible endpoint - AWS, MinIO, DigitalOcean Spaces - not just AWS itself.

How It’s Built

There’s no backend server. Local development is tied together by pnpm-workspace.yaml, so the frontend uses the local @opndrive/s3-api workspace package. See Repository Structure for the full map.

Tech stack: Next.js 15, React 19, TypeScript, Tailwind CSS, Zustand + React Context for state, Vitest for testing.

Where to Go Next