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Best Self-Hosted Cloud Storage

This is the category people actually mean when they say they are leaving the cloud.

Updated 2026-10-03 · 6 options compared

The short answer

Nextcloud if you want one platform covering files, calendars, contacts and collaboration. Seafile if you want faster, more reliable synchronisation of large libraries and are happy to give up the app ecosystem.

This is the category people actually mean when they say they are leaving the cloud. Files are the thing you cannot afford to lose and cannot easily move back, which makes the choice more consequential than a media server: a bad media server is an evening wasted, a bad file platform is months of uncertainty about whether your data is intact.

6 options at a glance

Comparison of the 6 self-hosted options ranked on this page
# Tool License Setup Best for
1 Nextcloud AGPL-3.0 Intermediate One server that replaces Google Drive, Calendar, Contacts and more.
2 Seafile AGPL-3.0 Intermediate Fast, dependable sync of a large file library, especially for teams.
3 Syncthing MPL-2.0 Beginner Device-to-device file synchronisation with no server in the middle.
4 AList AGPL-3.0 Beginner Unifying many existing cloud drives behind one file listing.
5 Rclone MIT Intermediate Scripted transfers, mirroring and encryption between storage backends.
6 Duplicati LGPL-2.1 Beginner Scheduled encrypted backups without learning a backup system.

Which one should you pick?

Nextcloud and Seafile make different bets. Nextcloud is a platform: files, calendar, contacts, chat, office documents, and a large app store, at the cost of being a real system to operate. Seafile is a synchronisation engine with a web interface bolted on, and it is markedly faster and lighter because it does not try to be everything. If you want to replace five cloud subscriptions with one server, choose Nextcloud. If you want your files to sync perfectly and nothing else, choose Seafile. The remaining four entries solve narrower problems — device-to-device sync without a server, browsing cloud storage, moving data between clouds, and backing the result up — and most self-hosters end up running two or three of them together.

What actually decides it

All 6 options, in order

1

Nextcloud

Featured

Best for: One server that replaces Google Drive, Calendar, Contacts and more.

The reason to choose it is breadth: files, calendar, contacts, notes, tasks, and a collaboration layer, all behind one login, with the largest ecosystem of any self-hosted product. That breadth is also the cost — it is a heavier system to run well, and database performance needs attention at scale. For a household replacing several cloud subscriptions at once, nothing else gets close.

Files & Sync AGPL-3.0 Intermediate ★ 36,966

Replaces: Google Drive, Dropbox, OneDrive

Full review of Nextcloud →

2

Seafile

Best for: Fast, dependable sync of a large file library, especially for teams.

A dedicated sync engine rather than a platform, and it shows: delta synchronisation, a client that stays out of your way, and markedly better behaviour on large libraries. The trade is a far smaller app ecosystem and a less extensible product. If your requirement is simply "my files are everywhere I am, correctly", this is the stronger engineering answer.

Files & Sync AGPL-3.0 Intermediate ★ 15,293

Replaces: Dropbox, Google Drive, OneDrive

Full review of Seafile →

3

Syncthing

Best for: Device-to-device file synchronisation with no server in the middle.

No central server at all — devices synchronise directly with each other, encrypted, and there is no storage quota and no account. That makes it the right tool for keeping a folder mirrored across a laptop, a workstation and a NAS without renting anything. It is not a file-sharing platform, and that deliberate narrowness is what makes it dependable.

Files & Sync MPL-2.0 Beginner ★ 89,064

Replaces: Dropbox, Resilio Sync, Google Drive

Full review of Syncthing →

4

AList

Best for: Unifying many existing cloud drives behind one file listing.

Solves a problem the others do not: you already have files scattered across a dozen providers and want one interface over all of them. It fronts dozens of storage backends behind a single file browser and WebDAV endpoint, so a mixed estate becomes navigable without migrating anything.

Files & Sync AGPL-3.0 Beginner ★ 50,248

Replaces: Google Drive, Dropbox, Nextcloud

Full review of AList →

5

Rclone

Best for: Scripted transfers, mirroring and encryption between storage backends.

The command-line tool that everything else is built on top of. If you want to move, mirror, deduplicate or cryptographically wrap data between local storage and dozens of providers, rclone does it, scriptably and reliably. It is not a user interface, and it is not trying to be — it is the plumbing.

Files & Sync MIT Intermediate ★ 60,041

Replaces: Dropbox, Google Drive, rsync

Full review of Rclone →

6

Duplicati

Best for: Scheduled encrypted backups without learning a backup system.

Included here because the most common way people lose a self-hosted file library is having no backup of it. Duplicati is the easiest on-ramp: scheduled, encrypted, deduplicated backups to almost any destination, with a web interface, so there is no excuse for the gap between "my files are synced" and "my files are safe".

Files & Sync LGPL-2.1 Beginner ★ 15,046

Replaces: Backblaze, Carbonite, Acronis

Full review of Duplicati →

How these compare to what you are using now

Google Drive

The default by inertia. Excellent sharing, but your files are also somebody's training data and pricing model.

Dropbox

The best sync engine in the business for years. That quality is exactly what makes the alternative migration worth the weekend.

Nextcloud

Open source and self-hostable — this entry is about Nextcloud's own hosted plans reintroducing the subscription you left.

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