Which self-hosted file sync and share platform fits your situation
Nextcloud, ownCloud and Seafile each fit a different set of priorities for a team replacing Dropbox, OneDrive or Google Drive inside its own infrastructure. Nextcloud suits teams that want a broad suite with a large app ecosystem and a paid Enterprise tier for support. ownCloud fits two different needs: the classic ownCloud Server, which is deployed only with Docker in its 11.0 line, or ownCloud Infinite Scale (oCIS), a Go-based platform that can start with no external database or identity provider. Seafile fits teams that want library-level encryption and a lean server footprint. The community cores are open source: Nextcloud Server and the classic ownCloud Server are AGPL-3.0, Seafile's server core is AGPLv3, and oCIS is Apache-2.0. Nextcloud Enterprise and Seafile Professional are commercial products and are not OSI open source, so check which features you would depend on before you commit.
Start by listing the features your rollout cannot do without, then test them against each community core and its paid tier. Confirm that SAML 2.0 or LDAP is available in the edition you plan to run, since Seafile lists SAML 2.0 under Professional and Nextcloud documents LDAP, OpenID Connect and SAML backends. Note that Seafile Professional can run without a license file for up to 3 users, so a small pilot may avoid licensing cost, but a larger rollout will need a paid key. Ask each vendor which edition includes the support window you need. Check the supported database and PHP versions against your standards, because the Nextcloud 35 requirements list several options and Oracle is available only with an enterprise subscription. Confirm the office integration you want, such as Collabora Online or ONLYOFFICE Docs over WOPI, before you pick a platform.
Which file sync platform suits each scenario
This table matches common file sync and share requirements to Nextcloud, ownCloud and Seafile, and names the condition under which each option wins. Read each row as a starting point, then confirm the detail in the platform's own documentation and your environment before you shortlist.
| Scenario | Best fit | Why and where the alternative fits |
|---|---|---|
| One suite with calendar, talk and office apps | Nextcloud | Nextcloud bundles files with calendar, Talk and office integration in one AGPL-3.0 platform. If you only need file sync with a separate office server, Seafile or classic ownCloud can be simpler to run. |
| Single Go binary or Kubernetes-ready deployment | ownCloud Infinite Scale | oCIS is a Go platform that runs as one binary with no external database for basic deployments, and it ships Helm charts. Confirm the 9.0 line status before you commit, since v9.0.0 was still a release candidate when this was researched. |
| Per-library encryption with user-chosen passwords | Seafile | Seafile libraries sync separately and can each be encrypted with a password chosen by the user. Confirm how key recovery works for your policy, since a forgotten library password can leave data unreadable. |
| Public body needing paid support tiers | Nextcloud | Nextcloud Enterprise offers Standard, Premium and Ultimate tiers with a 100-user minimum in its pricing. Seafile Professional and ownCloud commercial support are also options, so request written scope and support hours from each vendor. |
| Fixed Docker image as the deployment standard | ownCloud Classic 11 | Classic 11 is deployed only with Docker, with the web server, PHP and database inside ownCloud's images. Choose it if your change control is built around that image. Nextcloud All-in-One is another Docker-based option, but it manages a broader stack. |
| Existing LDAP or Active Directory with SSO | Nextcloud or Seafile | Both support LDAP and Active Directory, and both document SSO options. Nextcloud also documents OpenID Connect and SAML backends. Confirm the exact connector and edition needed for SAML in your version. |
| Team with limited admin time | Seafile for small teams | Seafile Professional can run without a license file for up to 3 users, per its download page. Larger teams should weigh the admin effort of clustering, upgrades and backups against Nextcloud All-in-One's bundled tooling. |
Nextcloud, ownCloud and Seafile in brief
Nextcloud, ownCloud and Seafile all replace Dropbox, OneDrive or Google Drive on infrastructure you control, but they differ in license, paid tier and architecture. The cards below set out the license, the paid option, the current release line and the main trade-off for each, so you can narrow the shortlist before testing.
Nextcloud Server
Nextcloud Server is licensed under AGPL-3.0-only, and Nextcloud GmbH sells Enterprise as a paid subscription with support. Its major versions ship every four months, and each line receives monthly maintenance for one year, so the upgrade cadence is the first operating decision you will make. Check whether your team can move one major version at a time, back up before each upgrade, and hold back third-party apps until they are confirmed compatible. Confirm which Enterprise tier includes the support hours and maintenance lifecycle your auditors expect.
ownCloud Classic
The classic ownCloud Server (owncloud/core) is licensed under AGPL-3.0, and ownCloud is now part of Kiteworks, which says the open-source position stays the same. Classic 11 is deployed only with Docker, with the web server, PHP runtime and database managed inside ownCloud's images. Check whether your platform team accepts that packaging model and how you will patch the images. Ask ownCloud which support terms apply to the 10.x and 11 lines before you commit.
ownCloud Infinite Scale
ownCloud Infinite Scale (oCIS) is a separate Apache-2.0 platform written in Go, not an upgrade path from classic ownCloud. It ships as a single binary of microservices, needs no external database or identity provider for basic deployments, and supports S3, NFS and PosixFS storage backends with Helm charts for Kubernetes. Choose it when you want a Go service with an embedded or OpenID Connect identity model. Plan for a separate migration if you already run classic ownCloud, and confirm which features in your current setup oCIS supports.
Seafile Community and Professional
Seafile's server core is AGPLv3, Seahub is Apache 2.0 and the desktop client is GPLv2. Its Professional Edition is commercial and adds SAML 2.0, cluster deployment, multi-tenancy, role-based permissions, ClamAV virus scanning and advanced file search. Professional can run without a license file for up to 3 users, so small pilots can start without a purchase. Each library can be encrypted with a user-chosen password, but that password is not recoverable by administrators, so confirm your key recovery process before rollout.
How the three platforms compare on capability
This table sets Nextcloud, ownCloud and Seafile side by side on license, paid editions, runtime, storage, encryption, identity, office integration, deployment and clients. Where the researched facts stop, the cell tells you what to confirm with the vendor before you shortlist a platform.
| Capability | Nextcloud | ownCloud | Seafile |
|---|---|---|---|
| License | AGPL-3.0-only for Nextcloud Server | AGPL-3.0 for classic ownCloud Server; oCIS is Apache-2.0 | Server core AGPLv3, Seahub Apache 2.0, desktop client GPLv2 |
| Paid edition | Nextcloud Enterprise subscription with support, sold in tiers | Paid support and offerings from ownCloud GmbH, part of Kiteworks; confirm current scope | Seafile Professional Edition, which runs without a license file for up to 3 users |
| Database and runtime | PHP 8.3 to 8.5 with MySQL, MariaDB or PostgreSQL; Oracle and SQLite have limits | Classic 11 ships inside Docker images with web server, PHP and database managed; oCIS needs no external database for basic use | Confirm supported database and runtime versions in the admin manual for your release |
| Storage backends | Confirm the current object storage and external storage options in the admin documentation | oCIS documents S3, NFS and PosixFS backends; confirm classic server options | Storage backends include S3, Ceph and OpenStack Swift per the admin manual |
| Encryption design | Confirm server-side and end-to-end options for your edition and version | Confirm encryption model for classic and oCIS separately | Libraries sync separately and each can be encrypted with a user-chosen password |
| LDAP and Active Directory | LDAP app lets directory users log in with their credentials | Confirm LDAP support for classic and oCIS | Supported per the admin manual |
| SAML 2.0 | Documented as a user authentication backend | Confirm for classic server; oCIS uses OpenID Connect | Listed as a Professional Edition feature |
| OpenID Connect | Documented as a user authentication backend | oCIS embeds LibreGraph Connect or connects to providers such as Keycloak | Confirm with the admin manual for your version |
| Office integration (WOPI) | Collabora Online and ONLYOFFICE via the Nextcloud Office and app options; confirm current app list | oCIS supports Collabora Online, ONLYOFFICE Docs and Microsoft Office Online Server via WOPI | Documented integration with ONLYOFFICE and Collabora Online |
| Deployment methods | All-in-One installer, Helm chart for Kubernetes, and manual installation | Docker for classic 11; oCIS offers Helm charts and runs as a single binary | Docker single-node, Kubernetes with Helm, and binary installation |
| Clients | Confirm current desktop, mobile and sync client list with the vendor | Web, Android, iOS and desktop clients over WebDAV and CS3 APIs | Desktop client GPLv2, Android GPLv3, iOS Apache 2.0 |
How SSO, LDAP and deployment differ by platform
Nextcloud documents the broadest set of identity options among the three platforms. The LDAP app lets LDAP and Active Directory users appear in Nextcloud and sign in with their directory credentials, and the server also documents OpenID Connect and SAML user authentication backends. Deployment has an official route through Nextcloud All-in-One, plus a Helm chart for Kubernetes. This matters most when an existing Active Directory forest is the source of truth and the team wants directory logins without a second account store.
- Active Directory: The LDAP app maps directory users and groups into Nextcloud, so logins follow the directory account. Confirm how your forest uses nested groups and which attributes identify users before you test.
- OpenID Connect or SAML: These are documented authentication backends for teams that already run an identity provider. Confirm which protocol your provider supports and whether it matches your login policy.
- All-in-One: This is described as the official installation method and bundles Redis and APCu caching, PostgreSQL, optional Nextcloud Office, Talk with recording, BorgBackup-based backups, ClamAV and full-text search. Confirm that the bundled components meet your own standards for database, backup and antivirus.
- Helm and upgrades: A Helm chart covers Kubernetes deployments. Nextcloud does not allow skipping major releases, so build one-version-at-a-time upgrades into your operating plan.
Test LDAP bind, group sync and login against a copy of your directory, and check the Nextcloud system requirements for supported database and PHP versions.
ownCloud splits into two products with different deployment models. ownCloud Classic 11 is deployed only with Docker, with the web server, PHP runtime and database managed inside ownCloud's images. ownCloud Infinite Scale (oCIS) is a separate Go platform whose quickstart needs no external database and no external identity provider. oCIS can use its embedded LibreGraph Connect identity provider or connect to an external OpenID Connect provider such as Keycloak. This matters when you need a small, self-contained start or a Keycloak-based identity model.
- Classic 11 Docker-only: Your team operates the container platform, while the web server, PHP and database versions come from ownCloud's images. Confirm that your container standards allow this model before you commit.
- oCIS quickstart: The quickstart runs without an external database or identity provider, which suits pilots. Plan a move to an external identity provider before production if your policy requires one.
- Keycloak and OpenID Connect: oCIS connects to external OpenID Connect providers such as Keycloak. Confirm the client configuration, claim mappings and group handling in your own Keycloak realm.
- Kubernetes and storage: oCIS offers Helm charts and supports S3, NFS and PosixFS storage backends. Confirm which backend your storage team can support and how it interacts with your backup process.
The sources supplied for this page do not describe LDAP or Active Directory setup for either ownCloud product, so ask the vendor to confirm directory integration for your version. Start with the ownCloud Server 11.0 system requirements if Classic is on your list.
Seafile supports LDAP and Active Directory integration and several single sign-on options, and its admin manual documents Docker single-node setups, Kubernetes deployments with Helm charts and binary installations. SAML 2.0 is listed among the Professional Edition features. This matters for teams that want directory integration with a choice of deployment method, and that can confirm which protocols their chosen edition supports.
- Active Directory and LDAP: Seafile documents directory integration, so confirm how user and group lookups, nested groups and account disablement flow from your directory into Seafile.
- SAML 2.0 on Professional: SAML 2.0 is listed as a Professional Edition feature. Confirm the edition and license you need before you design the login flow around it.
- Professional without a license file: Professional Edition can run without a license file for up to 3 users, according to the Seafile download page. Plan for a license if your user count grows.
- Docker, Kubernetes and binary installs: The manual documents all three paths. Choose Docker for a single node, Helm for Kubernetes and binaries when your platform team manages the operating system directly.
- Storage backends: The manual lists S3, Ceph and OpenStack Swift. Confirm how each backend interacts with your backup and encryption design.
Check which SSO protocols your chosen edition supports, including whether it matches a Keycloak or other identity provider requirement, and review the Seafile admin manual before you finalize the deployment model.
What moving users between these platforms actually costs
The cost of a switch is rarely the software license. Moving users from one file platform to another is a migration project: file data must be copied between storage layouts, folder permissions and share links must be mapped to the new model, and every LDAP, Active Directory, OpenID Connect or SAML binding must be rebuilt and tested against the new identity flow. Office integrations need the same care, because the WOPI connection to Collabora Online or ONLYOFFICE Docs is configured per platform and document locks, templates and editing permissions do not carry over by default. Confirm with each vendor or partner which parts of the data move are automated, which require scripts written for your layout, and how sync client state is handled so users do not re-upload large libraries.
Recurring effort matters as much as the one-time move. Nextcloud does not allow skipping major releases, so administrators must step through one major version at a time, back up before every upgrade and check that each third-party app is confirmed compatible before the upgrade runs. The Nextcloud 35 documentation sets out the supported PHP, database and web server versions, so a team staying on one platform should plan for several upgrade cycles per year and budget admin time for each one. A planned change of platform carries the same checks plus data reconciliation, so compare the upgrade rhythm you will carry in each option, not only the first installation.
Before accepting a quote, ask for a written migration plan: the export and import tooling and its supported source versions, how permissions, versioning and encryption keys are handled (including libraries encrypted with user-chosen passwords in Seafile), how identity mappings are rebuilt, which office integrations are re-tested, and how user retraining and a parallel-run period are scoped. Ask who maintains the migration scripts after handover. A partner that cannot describe these items in writing has not yet scoped the move.
How to choose and pilot a file sync platform
This sequence moves a team from open questions about users and data to a documented platform decision backed by a working pilot. Each step produces a artifact that the next one depends on, so the final choice rests on evidence rather than feature lists.
Define users, data classes and the identity source
Start by listing who will sync files, which groups need shared libraries, and what data classes are in scope, such as personal documents, regulated records or engineering files. Record where identities live today, for example an LDAP or Active Directory tree, a cloud identity provider, or a mix of both. The IT lead and the data owners own this step, and the output is a one-page requirements sheet that the security team signs off on. It is done when every user group maps to a data class and an identity source.
Shortlist one or two platforms against the scenario table
Use the scenario table on this page to narrow the field to one or two platforms that match the requirements sheet. Note where each candidate is strong, such as Nextcloud's LDAP app and its OpenID Connect and SAML backends, or oCIS's embedded identity provider and S3, NFS and PosixFS storage options, and where it needs extra components. The platform or architecture lead owns the shortlist. It is done when each shortlisted platform has a written reason it fits and a written gap it must close.
Confirm license terms and whether a paid tier is needed
For each shortlisted platform, confirm the license of the server, web interface and clients, then check which features sit behind a paid edition. Ask the vendor which support windows, maintenance lifecycle and clustering rights come with each tier, and whether SAML, virus scanning or multi-tenancy are included in the edition you plan to run. Legal and procurement own this step, with the technical lead supplying the feature list. It is done when you hold a written note of the license and edition needed for each use case, with the vendor's answers attached.
Run a pilot with real sync clients and login
Deploy the shortlisted platform in a test environment that mirrors production networking and identity. Connect desktop and mobile sync clients, log in with directory credentials, and open documents in the office integration you plan to use. Include a shared library, a large file, a file edited offline and a revoked account. The platform engineer and two or three pilot users own the test, and the output is a dated test log with pass or fail results for each case.
Test the backup, restore and upgrade paths
Take a backup of the pilot, restore it to a clean host, and confirm that files, shares, users and office documents return intact. Then run an upgrade rehearsal. For Nextcloud, this means moving one major version at a time, as its upgrade documentation requires, and disabling third-party apps until they are confirmed compatible. The operations team owns this step. It is done when a restore has been timed and checked against the requirements sheet, and the upgrade runbook has been written and reviewed.
Estimate support and operating effort with the vendor
Ask each shortlisted vendor or implementation partner for a written scope covering installation, identity configuration, office integration, backup design, upgrades and ongoing support. Compare the admin time that the pilot revealed with the time you have available to run the platform. Procurement and the platform lead own this step, and the output is a quote tied to a written scope rather than a verbal estimate. It is done when every recurring task has an owner and a documented cost driver.
Decide and record the rationale
Bring the pilot log, the license note, the restore and upgrade results and the effort comparison to a decision meeting with the CIO or CISO. Record which platform was chosen, which requirements it meets, which gaps are accepted, and what would trigger a re-evaluation, such as a change in edition terms or a major upgrade. The sponsor owns the decision and the record. It is done when the decision record is filed with the requirements sheet and the migration plan can start.
Questions buyers ask before choosing a file sync platform
Can we use the AGPL community edition inside our company without paying?
Yes, for internal use the AGPL license lets you run Nextcloud Server, ownCloud Server, Seafile's server core and similar AGPL code without a license fee, but the obligations depend on how you modify and distribute it. Nextcloud Server is licensed AGPL-3.0-only, and Nextcloud GmbH sells an Enterprise subscription with support, per the Nextcloud server COPYING file. Ask your legal team to review the license terms for any custom code, branded clients or hosted service you plan to offer to people outside the company. Seafile's Professional Edition differs: it can run without a license file for up to 3 users, so larger teams should confirm current terms on the Seafile download page before committing.
What do paid editions add, and when are they worth buying?
Paid editions usually add vendor support, longer maintenance windows, and features such as SAML 2.0, clustering, or virus scanning, which vary by product. Nextcloud Enterprise is sold in Standard, Premium and Ultimate tiers with a 100-user minimum, and list prices start at 71.29 euros, 104.99 euros and 204.75 euros per user per year respectively for 100 or more users, according to the Nextcloud pricing page. Standard includes 1-year maintenance, Premium adds a maintenance lifecycle of 5 or more years and clustered instance support, and Ultimate adds support up to 24/7. Buy a paid tier when you need a contractual support window or a long maintenance lifecycle; a team under 100 users should ask whether the minimum changes the economics.
How much admin time does each platform need to keep running?
Admin time depends on upgrade cadence, the number of apps or extensions, and the database and storage design, not only on the license. Nextcloud publishes a new major version every four months and supports each for one year, and it does not allow skipping major releases, so administrators must upgrade one major version at a time, back up before every upgrade and disable third-party apps until they are confirmed compatible, per the Nextcloud upgrade manual. Ask each vendor for its upgrade path, the number of supported major lines, and the monitoring and backup routines it expects.
Can an internal team run this without outside help?
A competent internal platform team can run a single-node file platform, but the answer depends on how many people you need to serve, how many integrations you need, and how much on-call coverage you require. Seafile documents Docker single-node setups, Kubernetes deployments with Helm charts and binary installations, while Nextcloud All-in-One bundles Redis, PostgreSQL, backups and antivirus. Before deciding, list the skills you have in PHP or Go, database administration, identity federation, and reverse proxy operation. Use DeployOpen only as an option for planning, implementation, hardening and documentation in your own infrastructure, with scope agreed in writing before work starts.
What must our team provide: identity, storage, backups and network?
Four areas usually stay with the client: the identity source, the storage backend, the backup and restore process, and the network path. The identity source is often an LDAP or Active Directory directory, which Nextcloud's LDAP app and Seafile's directory integration both support, or an OpenID Connect provider such as Keycloak, which oCIS can connect to, per the Nextcloud LDAP documentation. Storage may be local disks, S3, NFS or Ceph, depending on the platform. Confirm with your infrastructure team who owns DNS, certificates, firewall rules and off-site backup copies before scoping a pilot.
How long does a pilot take, and what sets that duration?
A pilot's length is set by the number of identity integrations, storage backends, office integrations and user groups it must prove, not by the software alone. No fixed duration is published here, so ask any vendor or implementation partner to state the phases, exit criteria and the people each phase needs in writing. Most engagements are fixed-scope, meaning scope, deliverables and timelines are agreed before work starts. Plan for extra time if you must test LDAP group mapping, Collabora or ONLYOFFICE editing, or a migration from a hosted service.
How do we compare two quotes for the same file platform?
Compare quotes line by line against the same written scope, not by total price. Each quote should separate license or subscription fees, implementation labor, integration work, testing, documentation, and recurring support or upgrades. Ask which items are one-time and which recur, what drives each cost up or down, such as user count, number of identity sources and office integrations, and who owns backups and restore tests. DeployOpen does not publish a price list, and a quote follows from the written scope, so ask for a quote that names each deliverable and its acceptance criteria.
How DeployOpen scopes and supports a file sync selection and rollout
DeployOpen plans, implements, integrates, hardens, backs up, documents and supports self-hosted platforms inside your own cloud accounts, data centers or air-gapped networks. For a file sync and share rollout, that means turning the choice between Nextcloud, ownCloud and Seafile into a written scope covering your identity, storage, office and backup decisions before any build work starts.
How we scope
- Engagements are fixed-scope, with scope, deliverables and timelines agreed in writing before work starts.
- The scope records which edition, license tier and maintenance window you are buying, including whether Nextcloud Enterprise, ownCloud or Seafile Professional fits your user count.
- We confirm your directory, SSO and LDAP or Active Directory requirements, plus the storage backend and encryption model each platform would need in your environment.
How we build
- Installation is planned against the vendor system requirements for your chosen version, including PHP, database and web server combinations.
- Identity integration, office integration through WOPI-based editors, and client sync settings are configured and tested against your user groups.
- Security testing of the deployed platform, backup and restore checks, and hardening steps are included in the agreed scope where you request them.
How we hand over
- Deliverables are documented runbooks covering installation, upgrade steps, backup procedures and the configuration choices made during the build.
- Upgrade notes record the one-major-version-at-a-time rule and the third-party app compatibility checks your team must repeat.
- Compliance readiness material is prepared as evidence for your own auditors, since DeployOpen does not issue audit reports or certifications.
How we support
- Ongoing support, upgrades and continuous testing are available as retainers, separate from the initial fixed-scope build.
- Retainer scope should be confirmed in writing, including which major lines are covered and how upgrades are scheduled around vendor end-of-life dates.
- Ask for a quote that itemizes build, testing, documentation and retainer effort so you can see which costs are one-time and which recur.
