Best Self-Hosted File Sync & Storage Software

Self-hosted file sync replaces Dropbox with your own server — or, in one case, with no server at all. Settle the shape first. Nextcloud is a platform: files plus calendar, contacts, mail, calls and office documents behind one login, on a PHP stack with a real database. ownCloud Infinite Scale, OpenCloud and Seafile are focused file servers — oCIS a Go rewrite that runs as a single binary, OpenCloud the Heinlein Group's continuation of that code with no database at all, Seafile a C and Go sync engine that organises files into libraries, syncs them with delta uploads and can encrypt a library on the desktop client. Syncthing is the outlier: peer-to-peer sync between your own devices, with no central server, no accounts and no web file browser. Then read two lines on each page. Storage: Nextcloud keeps plain files in its data directory and OpenCloud a plain folder tree with metadata in extended attributes, while Seafile splits them into deduplicated blocks, so its backups must include the databases and deleted data needs a garbage-collection run. And editions: Seafile's Professional Edition, free for up to three users, holds back full-text search, file locking and audit logs that the Community Edition does not have.

File sync & storage

FileBrowser Quantum

A web file manager for folders on your server, with indexed search, share links, multiple users with OIDC or LDAP sign-in, WebDAV and file previews. It is a heavily reworked fork of the original File Browser project, whose filebrowser/filebrowser repository has since been archived on GitHub.

GoVue

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File sync & storage

Nextcloud

Self-hosted file sync, sharing, calendar, and collaboration suite — the most complete Dropbox/Drive replacement.

PHPJavaScript

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File sync & storage

OpenCloud

A Go file sync and share server built on ownCloud Infinite Scale's code and developed since 2025 by OpenCloud GmbH, part of Berlin's Heinlein Group. It runs with no database: files are stored as a normal folder tree on disk and their metadata in extended attributes. Spaces, share links, desktop and mobile apps, and Collabora for office editing through an optional compose module.

Go

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File sync & storage

ownCloud

ownCloud's modern flagship, Infinite Scale (oCIS) — a cloud-native rewrite in Go that replaces the legacy PHP server Nextcloud originally forked from. Single binary, lighter to run, enterprise-focused file sync and sharing.

Go

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File sync & storage

Seafile

File sync and share built around libraries: each one syncs separately with delta transfers and resumable uploads, and any library can be encrypted on the desktop client with a password the server never stores. The Community Edition server core is AGPL-3.0 with an Apache-2.0 web UI; the Professional Edition adds full-text search, file locking, audit logs and S3 storage, and is free for up to three users.

CGoPython

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File sync & storage

Syncthing

Continuous, peer-to-peer file synchronization with no central server and no cloud — your files sync directly between your devices, end-to-end encrypted in transit.

Go

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Head-to-heads in this category

FilesSep 2026

Nextcloud

vs

OpenCloud

The PHP collaboration platform vs. the Go file server with no database.

Read the verdict →

FilesSep 2026

Nextcloud

vs

ownCloud

All-in-one platform vs. lean file sync.

Read the verdict →

FilesSep 2026

Nextcloud

vs

Seafile

The all-in-one platform vs. the focused sync engine.

Read the verdict →

FilesSep 2026

ownCloud

vs

OpenCloud

ownCloud Infinite Scale vs. the Heinlein Group's continuation of its code.

Read the verdict →

FilesAug 2026

Syncthing

vs

Nextcloud

Peer-to-peer file sync vs. the all-in-one file platform.

Read the verdict →