Pydio Cells
File Sync & StorageDocument sharing and collaboration for organizations
Replaces Dropbox, Box
3 self-hosted Box alternatives
Box is a commercial cloud content management and file sharing service focused on business and enterprise use. It emphasizes security, governance, and collaboration. These open-source apps let you replace Box with software you host and control yourself.
Best self-hosted Box alternatives
Last reviewed Oct 11, 2026 · 601 words
Moving off Box is a file copy plus a permissions project, and the permissions are the part that takes the time. For most organisations the self-hosted target is Nextcloud, with Pydio Cells as the better pick when governance and tight access control matter more than an app ecosystem. Both are rated Medium by the directory and estimated at 512 MB of RAM to start, which is a floor, not a plan for a company's worth of users. The Box alternatives cards also list Nephele and the Pydio Cells Client, but neither replaces Box on its own: one is a WebDAV server with no web interface and the other is a command-line client for Pydio Cells.
What you gain and what you give up
Gained: storage priced by the disk rather than by the seat, files kept in a location and jurisdiction you choose, and an audit trail you control end to end. Given up: Box's enterprise compliance layer (retention policies, legal holds, and the security add-ons sold on higher tiers), Box Sign and Box Notes, its long list of maintained integrations, and an uptime guarantee someone else is accountable for. If your organisation chose Box because of a regulatory requirement, confirm with whoever owns that requirement that a self-hosted server meets it before you move anything.
Which replacement fits which organisation
| App | Stars | Language | Strength | Catalogue caveat |
|---|---|---|---|---|
| Nextcloud | about 37,000 | PHP | Sync, sharing, office editing, large app ecosystem | Can be resource heavy, needs tuning |
| Pydio Cells | about 2,300 | Go | Workspaces, granular access control | Smaller community |
| Seafile | about 15,000 | C | Fast, efficient sync | Fewer collaboration features |
Nextcloud covers the most of what Box users touch every day: desktop and mobile sync clients, share links with expiry and passwords, groups, and in-browser document editing through Nextcloud Office. Its deploy notes are worth following from the start: use MariaDB or Postgres instead of the SQLite default, and add Redis caching plus a background-jobs cron container before inviting other users. Pydio Cells is closer to Box's own pitch, built around workspaces and access policies for organisations rather than a personal cloud, with LDAP support and its own desktop and mobile clients. Seafile is the choice when large-file sync speed is the main complaint and collaboration features are secondary.
How the migration actually goes
The bulk copy is the straightforward part. rclone has a Box backend and a WebDAV backend, so you can authorise both and copy server to server without staging everything on a laptop:
rclone copy box:Shared nextcloud:Shared --progress --transfers 8Run it once to seed, then again just before cutover to catch changes. What does not travel: shared links (every external link breaks and must be reissued), collaborator permissions on folders, comments, version history, and Box Notes, which are a Box format rather than ordinary documents. Export a report of who has access to what from the Box admin console before you start, and rebuild those permissions as groups on the new server rather than copying individual grants one by one.
Bottom line: Nextcloud for most, Pydio Cells for governance
Start with Nextcloud on Postgres with Redis, move one department first, and only migrate the rest once their sharing habits survive the switch. Pick Pydio Cells if your Box usage was mostly controlled workspaces for teams and external partners. The Nextcloud vs Pydio Cells comparison goes deeper on that choice, and the personal cloud stack shows what usually runs alongside a file server.