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Home/Categories/Cloud & Hosting/OpenCloud
icon of OpenCloud

OpenCloud

Open source alternative to Box, Microsoft 365 and Google Workspace

  • 6.2K stars
  • Apache-2.0
  • Active this week
  • Last commit 1 day ago

Last verified Oct 21, 2026

OpenCloud is an open source file sync and sharing platform for organizations that need data sovereignty: self-hosted, S3-compatible storage, and a modern web collaboration interface. Apache-2.0 licensed.

Visit websiteGitHub6.2K stars1-click deploy on Hostinger
image of OpenCloud
TL;DR

OpenCloud is a file-sync and collaboration server backend for organizations that want cloud storage under their own control. It replaces proprietary file platforms like Google Drive or Microsoft OneDrive when data location, identity integration, and self-hosting matter. Apache-2.0 licensed.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
who it's for

Who OpenCloud is for#

Organizations needing sovereign file storage

Use OpenCloud when file sharing and sync need to run on infrastructure controlled by the organization or jurisdiction.

Skip if:

You only need consumer-grade cloud storage with no server operations.

Platform teams integrating storage with identity

Use OpenCloud when file access must connect to OpenID Connect identity providers and internal policy.

Skip if:

Your team cannot operate a file service and identity integration stack.

the problem

The problem it solves#

File collaboration often starts with convenience and ends with platform lock-in. Documents, user identity, sharing links, and access policy become tied to a vendor account that may not fit sovereignty, public-sector, or regulated requirements.

Teams need modern file access and sharing without surrendering the storage layer. The hard part is combining identity, filesystem storage, web access, and collaboration semantics into a server that operators can run and audit.

how OpenCloud solves it

How it solves it#

Self-hosted file backend

OpenCloud provides the server backend for file storage and sharing, giving operators a way to keep data on controlled infrastructure.

OpenID Connect authentication

The README documents authentication through OpenID Connect with external identity providers such as Keycloak or the embedded LibreGraph Connect provider.

Filesystem-based storage

The project README states that the backend stores data in the filesystem by default rather than relying on a separate database.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Apache-2.0 server codeOpenCloud publishes the server backend under Apache-2.0, which gives teams a permissive basis for review, modification, and deployment.
  • Identity integration is built into the backend modelOpenID Connect support helps organizations connect file collaboration to existing identity policy instead of operating isolated local accounts.

Trade-offs

  • -Backend-focused project surfaceThe main repository describes the server backend. Teams should review the wider OpenCloud ecosystem and docs before assuming every end-user collaboration feature is included in this repo.
tech stack · detected from GitHub

What it's built on#

Languages
GoJavaScriptPHP
Frameworks
React
Tooling
Webpack
frequently asked

FAQ#

What is OpenCloud?

OpenCloud is a server backend for self-hosted file storage, sync, and collaboration workflows.

How does OpenCloud authenticate users?

The README documents OpenID Connect authentication through external providers such as Keycloak or the embedded LibreGraph Connect provider.

Does OpenCloud use a database?

The README states that the backend stores data in the filesystem by default and does not use a database for that storage layer.

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Hostinger

Run OpenCloud on your own server

Hostinger sets OpenCloud up as a one-click app on a VPS.

Deploy on Hostinger

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