SealShare
Self-hosted file sharing. Your own upload page to exchange files with customers, encrypted at rest, on your server and your domain. Open source, one Docker image.
SealShare is file sharing software you install on your own server. Your company gets its own upload page to send files to customers and receive files from them, on your own domain. The files stay on a server you run instead of passing through a transfer service.
- Upload and share: drop files or whole folders, then copy the link, show it as a QR code or send it from the phone’s share sheet
- No accounts for customers: they open the link and download single files or everything as a ZIP
- Encrypted at rest with AES-256-GCM as the files arrive; with a share password the key is derived from it and never stored. It is not end-to-end encryption: the server handles the files in the clear while they are uploaded and downloaded
- Password, expiry and download limit for every share, with an expiry from 1 hour to 30 days; expired shares and their files are deleted every hour
- Admin dashboard and settings: every share with its size, downloads and expiry, upload limits, a storage quota, and your own logo, title and description on the upload page
- An optional system password that closes the upload page to everyone else, and two-factor sign-in for admins
- Light and dark theme, on desktop and phone
- Open source under the MIT licence: free, with no seats or subscriptions
How it’s built
- Laravel 13 with Livewire 4, Tailwind CSS 4 and Livewire Material for the Material 3 Expressive components
- FrankenPHP through Laravel Octane, with automatic TLS certificates, and SQLite: one Docker image and no separate database
- Chunked, streaming AES-256-GCM, with PBKDF2-SHA256 to derive the key from a share password
- Laravel Fortify for sign-in, password reset and two-factor authentication
- Pest tests, including browser tests with Playwright