Which self-hosted file platform fits your team in 2026
Nextcloud fits teams that want one platform for files, office, calendar, chat and apps. OpenCloud fits teams that want a filesystem-only file service with OpenID Connect sign-in. Seafile fits teams that care most about fast library-based sync and can work within its free three-user Professional tier. Small teams of up to three users can start on Seafile Professional without a license file, but a team that needs SAML 2.0 or clustering will need a paid Seafile license. Organizations that already run a central identity provider and want plain storage on disks or object stores should look at OpenCloud first, since it keeps all data in the filesystem and uses no database. Teams that expect to grow into collaboration tools will usually find Nextcloud the broadest starting point. Each advantage depends on your user count, identity setup and feature needs, and paid editions can change the cost picture quickly.
Cost starts with what each vendor sells. Nextcloud Server is AGPL-3.0-only, and Nextcloud GmbH sells Enterprise subscriptions in tiers with a 100-user minimum, so a team below that size cannot buy the subscription at all and carries its own support and upgrade work. Seafile's server core is AGPLv3, and its Professional Edition adds SAML 2.0, clustering and virus scanning, which is where a growing team will face a license decision. OpenCloud publishes its code under Apache 2.0 and AGPL-3.0 and offers paid builds for support and professional services. Ask each vendor for a written quote tied to your user count, the support hours you need and the upgrade path. Compare the recurring line items, since the one-time cost of setup and migration will be similar across the three platforms only if your scope is similar.
Before you commit, run a short proof of concept with your live identity provider, your largest folder tree and the sync clients on the operating systems you use. For Nextcloud, confirm the PHP, database and web server versions for the release you choose, because Nextcloud 35 supports PHP 8.3 to 8.5 and several database engines, and plan upgrades one major version at a time. For OpenCloud, confirm how your external identity provider, such as Keycloak, maps user attributes into the platform. For Seafile, confirm that library encryption and sync behavior meet your needs on the Community Edition before you buy a Professional license. Write down the cost of switching now, because moving users between these three platforms is a migration project that needs planning, testing and a rollback path.
Which platform fits which scenario
This table maps five common scenarios to the platform that fits best, the condition that makes it the right choice, and when another option is the better call. Read each row against your user count, storage design and whether you need paid support, since those three factors decide most shortlists.
| Scenario | Best fit | Why, and when another option is better |
|---|---|---|
| Up to three users testing a paid tier for free | Seafile | Seafile Professional can run without a license file for up to 3 users, per its download page, so a small team can trial SAML, clustering or virus scanning at no license cost. Choose Nextcloud instead if you expect the team to grow past three and want apps beyond file sync from the start. |
| One hub for calendar, talk and office apps | Nextcloud | Nextcloud is built around an app ecosystem, so calendar, Talk and office integrations sit in one web interface. OpenCloud and Seafile cover file sync and sharing well but rely on separate tools for broader collaboration, so pick them if file service is the whole requirement. |
| Pure file service on existing storage with no database | OpenCloud | OpenCloud stores all data in the filesystem and uses no database, per its README, which suits a file-only service on storage you already run. Confirm your identity provider works through OpenID Connect, since sign-in depends on it, and choose Nextcloud if you need a database-backed app platform. |
| Large, sync-heavy file estate | Seafile | Seafile organizes data into libraries that sync separately, which suits many large sync workloads across desktop and mobile clients. Test sync performance against your own file counts and change rates before committing, because Nextcloud and OpenCloud may also meet the target depending on sizing. |
| Regulated organization needing paid support | Nextcloud | Nextcloud Enterprise adds a vendor-backed support subscription on top of the AGPL code, with tiers that include maintenance lifecycle and response-time options. Ask each vendor for the support terms in writing, and consider OpenCloud if its paid builds from OpenCloud GmbH match your assurance needs. |
How Nextcloud, OpenCloud and Seafile store data differently
The first decision in this comparison is where the metadata lives. Nextcloud keeps its state in a relational database alongside file storage. For Nextcloud 35, the supported databases are MySQL 8.4 or 9.7, MariaDB 10.11 to 12.3 or PostgreSQL 14 to 18, and the system requirements page notes limitations for Oracle and SQLite. A backup therefore has two parts that must be taken together: a consistent database dump and the data directory. Restoring one without the other leaves file records pointing at missing content or content nobody can find. Ask your database team how they will take a consistent snapshot of both while Nextcloud is running, and confirm the database tier you will operate, since it also drives high availability design and the upgrade path.
OpenCloud stores everything in the filesystem and uses no database. Its server is a Go codebase under Apache 2.0, and its storage model follows the oCIS design, where the documentation lists S3, NFS and PosixFS backends. For a file service, this means backup and recovery work at the filesystem or object store level, with snapshot tooling you already run. Scaling depends on which backend you choose, so confirm with OpenCloud GmbH how each backend behaves under concurrent writes, how metadata is kept consistent, and what a restore from a filesystem copy looks like for your chosen storage. Because the storage backend choice shapes the whole deployment, decide it before migrating any users.
Seafile organizes data into libraries that sync separately, and each library can be encrypted with a password chosen by the user. This makes recovery granular: a library can be restored, shared or moved on its own. It also creates a governance risk. A forgotten library password can make that library's content unrecoverable, and the server cannot reset it for an encrypted library. Before committing, confirm with Seafile how password-protected libraries are handled in your key management and backup policy, which storage backends (the admin manual documents S3, Ceph and OpenStack Swift) your team will operate, and how migration between libraries or storage tiers is done. Migrating users from either other platform is a separate project, so estimate that work with the vendor or a partner in writing before choosing.
Side-by-side capabilities from supplied facts
This table compares the three platforms on licensing, paid editions, storage design, sign-in, office integration, sync clients and deployment options. Where a capability was not confirmed for a platform, the cell tells you what to verify before deciding.
| Capability | Nextcloud | OpenCloud | Seafile |
|---|---|---|---|
| Server license | AGPL-3.0-only for the server, per the COPYING file | Apache 2.0 and AGPL-3.0, per the OpenCloud community page | Server core AGPLv3, Seahub Apache 2.0, desktop client GPLv2 |
| Paid editions | Nextcloud Enterprise subscription with Standard, Premium and Ultimate tiers and a 100-user minimum | Paid builds from OpenCloud GmbH for environments that need support and professional services | Professional Edition, free for up to 3 users without a license file; paid licensing above that |
| Database needs | Requires an external database: MySQL 8.4 or 9.7, MariaDB 10.11 to 12.3, or PostgreSQL 14 to 18 for Nextcloud 35 | No database; all data is stored in the filesystem, per the GitHub README | Requires a database for its server components; confirm exact engine and version in the Seafile admin manual |
| Storage design | Files and metadata managed by the server, with object storage options to confirm for your version | Filesystem storage with no database dependency | Files organized into libraries that sync separately; each library can be encrypted with a user-chosen password |
| LDAP and Active Directory | Supported through the LDAP app, so directory users can sign in with their credentials | Confirm directory options with OpenCloud GmbH; the README documents OpenID Connect | Supported for LDAP and Active Directory integration, per the Seafile admin manual |
| OpenID Connect | Documented as a user authentication backend | Supported, with an external provider such as Keycloak or the embedded LibreGraph Connect provider | Confirm in the Seafile admin manual for your edition and version |
| SAML 2.0 | Documented as a user authentication backend | Confirm with OpenCloud GmbH before relying on it | Listed as a Professional Edition feature |
| Office integration | Nextcloud Office and Collabora or ONLYOFFICE options; confirm the chosen connector for your version | Confirm office connectors with the vendor before scoping | Documented integration with ONLYOFFICE and Collabora Online |
| Sync clients | Desktop, iOS and Android clients; confirm current client versions | Confirm client platforms and versions in the OpenCloud documentation | Desktop client GPLv2, iOS client Apache 2.0, Android client GPLv3 |
| Deployment options | Docker-based All-in-One installer, manual LAMP or LEMP installs, and a Helm chart for Kubernetes | Confirm supported install methods, including Kubernetes, with the vendor | Docker single-node setups, Kubernetes with Helm charts, and binary installations |
Licensing and paid editions for each platform
The Nextcloud Server code is licensed under AGPL-3.0-only, and you can run the community edition in your own infrastructure without a subscription. Nextcloud GmbH sells Nextcloud Enterprise alongside it, aimed at enterprise, public sector and education users. Enterprise is sold in Standard, Premium and Ultimate tiers with a 100-user minimum. The pricing page lists starting list prices of 71.29 euros, 104.99 euros and 204.75 euros per user per year for 100 or more users, with lower rates from 200 users.
- Standard: includes one year of maintenance and support for the subscription.
- Premium: adds a maintenance lifecycle of five or more years, extended support hours and clustered instance support.
- Ultimate: adds support up to 24/7 with response times down to one hour.
- Community edition: the same AGPL code without a subscription, with support from the community and your own staff.
- Recurring cost: subscriptions renew annually, so budget for the per-user fee every year, not only at purchase.
Confirm with Nextcloud whether the list prices apply to your user count, currency and discount tier, and ask which upgrade support and lifecycle commitments are written into each tier.
OpenCloud publishes its source under the Apache 2.0 and AGPL-3.0 licenses, and the source is free to download and use. The project is based on a fork of ownCloud Infinite Scale, and OpenCloud GmbH, founded under the Heinlein Group, offers paid builds for organizations that need support and professional services. The community page presents the paid builds as the route to support and services, not as a separate code base, so confirm what differs between the free and paid builds before you commit.
- Free source: you can run the community build on your own servers without a license fee.
- Paid builds: OpenCloud GmbH sells builds for environments that need support and professional services.
- Services: professional services such as deployment help are priced by scope, so ask for a written statement of work.
- Hosting option: OpenCloud can also run as SaaS through selected partners, which moves hosting cost into a recurring service fee.
- Recurring cost: support contracts and any partner hosting fees recur, while the software itself carries no license fee.
Ask OpenCloud GmbH in writing which features, updates and response commitments are included in each paid build, and whether the support terms cover the exact release line you plan to run.
Seafile's server core is AGPLv3, its Seahub web interface is Apache 2.0 and its desktop client is GPLv2, so each part of the stack carries its own license. Professional Edition can run without a license file for up to three users, which makes it usable at very small scale without a purchase. Above that, or when you need specific features, you need a paid license. The Seafile manual lists SAML 2.0, cluster deployment, multi-tenancy, role-based permissions, virus scanning with ClamAV and advanced file search as Professional Edition features.
- Free tier: Professional Edition runs without a license file for up to 3 users.
- Paid features: SAML 2.0, cluster deployment, multi-tenancy, role-based permissions, ClamAV virus scanning and advanced file search.
- Community edition: Community Edition 12.0.14 is listed for generic Linux and does not include the Professional features above.
- Client licenses: the iOS client is Apache 2.0 and the Android client is GPLv3, so check these against your distribution plans.
- Recurring cost: Professional licensing is commercial, so confirm whether the price is annual or perpetual and what support it includes.
Request a written quote from Seafile that states the user count, the Professional features you need and whether the price covers the high availability setup you intend to run.
What drives the running cost of each platform
Licence fees are the most visible cost, but they are rarely the largest. The cards below cover what each platform charges for, what the team pays for itself, and which recurring tasks grow with users and data. Use them to shape the questions you put to each vendor or partner before you ask for a quote.
Paid builds and subscriptions per user
Nextcloud Enterprise is a per-user subscription sold alongside the AGPL community server, and OpenCloud GmbH offers paid builds for environments that need support and professional services. Both are recurring and both scale with headcount. Ask each vendor whether the price is per named user or per concurrent user, what the minimum seat count is, and which support hours and maintenance lifecycle the price includes.
The 100-user Enterprise minimum
Nextcloud's published Enterprise tiers start at a 100-user minimum, and the per-user list rate falls at higher seat counts. A team of 40 people cannot buy the entry tier at list, so the community server plus a partner for support is the realistic comparison at that size. Ask whether the minimum applies to your user count or your account count, and whether lower seat counts are quoted separately.
Free Seafile tier and paid features
Seafile Professional can run without a license file for up to three users, which makes it cheap to trial. Once you need SAML 2.0, cluster deployment, multi-tenancy or ClamAV virus scanning, the Professional licence becomes the cost to model. Confirm which of these features your identity and security standards require before you assume the free tier covers your pilot, and ask for the Professional price for your exact user count.
Database and backup operations on Nextcloud
Nextcloud stores metadata in a relational database, so the database engine, its patching and its backups become recurring operational work. Upgrades also require a backup before every step. Confirm which database versions your team will support, who owns database maintenance, and whether a managed database or a partner retainer is part of the quote, since these are usually billed separately from the software.
Storage choice and growth
Storage cost rises with data volume and retention, and the platforms differ in what that growth touches. OpenCloud keeps data in the filesystem with no database, Seafile stores files as libraries, and Nextcloud can use local, NFS or object storage. Object storage changes backup and recovery work, so decide the storage design before data exists. Ask the vendor or partner how backup size, replication and restore time scale with your data.
Staff time for upgrades
Staff time is a recurring cost that rarely appears on a licence quote. Nextcloud requires one major version at a time, backups before each upgrade, and third-party app checks, so each upgrade consumes internal hours or partner hours. Ask who performs each upgrade, how many staff hours the vendor expects per cycle, and whether a retainer covers upgrades, testing and rollback.
What implementing each platform involves
Settle three decisions before anyone installs anything: where user identities come from, which storage backend holds the files, and whether an office editor is part of the rollout. Each choice changes the install path for all three platforms. Identity sets how sign-in is wired, storage sets what you back up and restore, and the office editor adds a second service to patch and monitor. Nextcloud's LDAP app, its OpenID Connect and SAML backends, and OpenCloud's OpenID Connect sign-in are the main identity paths, so confirm which one your directory supports before you pick a platform.
Nextcloud carries the heaviest recurring upkeep. Nextcloud does not allow skipping major releases, so each upgrade moves one major version at a time, with a backup taken before every step and third-party apps disabled until their developers confirm compatibility. Plan that cycle against the four-month major release rhythm described in Nextcloud's maintenance schedule. For a fast start, Nextcloud All-in-One is the official installation method. It runs a managed set of containers that bundles Redis, PostgreSQL, optional Nextcloud Office and Talk, BorgBackup, ClamAV and full-text search. The trade-off is less control over the individual stack, so confirm which of those components your compliance team requires you to run and configure yourself.
OpenCloud and Seafile have different install shapes. OpenCloud's quickstart needs no external database, but production sign-in normally means wiring OpenID Connect to an external provider such as Keycloak or using the embedded LibreGraph Connect provider, and that choice is hard to reverse once users exist. Seafile installs through Docker, a Kubernetes deployment with Helm charts, or a binary install, and its ONLYOFFICE and Collabora Online extensions need a separate office service to deploy and keep current. Ask each vendor for its supported install path, its upgrade procedure and the backup scope it expects, then test a restore before go-live.
What moving users between these platforms costs
Moving users between these three platforms is a data migration, not a server swap. Nextcloud keeps files in a filesystem or object store with metadata in a relational database, OpenCloud stores all data in the filesystem with no database, and Seafile packs files into libraries that sync separately and can each carry their own encryption password. Those designs mean files, versions, share metadata and permissions do not map one to one. A library encrypted with a user-chosen password, for example, has to be decrypted and re-created as a different object type on the target. Before committing, ask each vendor or implementer for the export path for files, sharing links, group memberships and version history, and test it on a copy of real data. Sync clients also differ across the three, so every user will need to reconnect, and any client-side sync state will not carry over.
Sharing links and permissions need an explicit mapping plan. Document which share types, expiry dates, passwords and group or role rules exist in the source system, then decide which of them the target can express. Plan for users who rely on external shares, since those recipients will receive new links. Identity is a second layer: Nextcloud supports LDAP, OpenID Connect and SAML backends, OpenCloud authenticates through OpenID Connect, and Seafile supports LDAP, Active Directory and several single sign-on options, so confirm that the directory attributes and group names you need map cleanly before users are moved. The cost of this work is mostly staff and implementation time, and it recurs in every migration wave.
The lineage question deserves a written answer. ownCloud GmbH announced on November 21, 2023 that it was becoming part of Kiteworks, and the OpenCloud fork followed from that change. Teams weighing OpenCloud should ask for the roadmap, release policy, support scope and any paid-build terms in writing, and should check how those commitments would hold if the vendor changed hands again. Run a pilot group of 10 to 20 users (illustrative size) for several weeks, covering desktop and mobile sync, large folders, sharing, restores and an upgrade to a newer release. Confirm the export path works end to end before any department is moved, and agree in writing who owns rollback if the pilot fails.
Questions buyers ask before choosing a self-hosted file platform
Which self-hosted file platform is cheapest to start with?
The software itself is free to download for all three, so the starting cost is mostly the infrastructure and the people who install it. Nextcloud Server and ownCloud Server are AGPL-3.0, Seafile's server core is AGPLv3, and OpenCloud's source is published under Apache 2.0 and AGPL-3.0. Later cost depends on whether you need paid support or paid features. Seafile Professional Edition runs without a license file for up to 3 users, per the Seafile download page, and Nextcloud Enterprise is priced per user from a 100-user minimum, per Nextcloud's pricing page. Ask any vendor or partner to price the license tier, support hours and upgrade work separately in the quote so you can see what recurs as headcount grows.
How much internal staff time does each platform take to run?
Expect ongoing time for patching, backups, upgrades, monitoring and user administration on all three, with the largest differences in the stack you must operate. Nextcloud 35 needs a supported PHP version, a database such as MariaDB or PostgreSQL, and Apache or nginx with php-fpm, and it does not allow skipping major releases, so each upgrade is a planned step. OpenCloud stores data in the filesystem with no database, and the oCIS quickstart needs no external database or identity provider, which can reduce moving parts. Seafile offers Docker single-node setups and Helm charts. Ask each candidate for a written list of recurring tasks and the frequency it expects, then match it against the people you actually have.
Can our team implement one of these platforms without outside help?
A capable Linux and identity team can often install any of the three from the official documentation, and the choice depends on how much of the design you want to own. Installation is the easy part. The harder work is integrating with your directory, sign-in provider, storage backend, backups, office integration and monitoring, then testing restores and upgrades. Nextcloud documents LDAP, OpenID Connect and SAML backends, and Seafile supports LDAP, Active Directory and several single sign-on options. If your team lacks time or depth in those areas, DeployOpen plans, implements, integrates, hardens and documents self-hosted platforms in your own infrastructure, usually under a fixed-scope written agreement.
How long does a typical self-hosted file platform rollout take?
No supplied source gives a reliable duration for these rollouts, so treat any number you hear as unverified. The timeline is set by identity integration, data migration from existing shares, the number of users and client devices, storage design, backup and restore testing, and how many integrations such as office editing or antivirus must work on day one. A pilot group with a short list of must-have integrations usually moves faster than a full cutover. Ask any implementation partner for a timeline tied to a written scope, with each milestone and the acceptance test for it listed.
What skills must our internal team have to run one of these?
Plan for Linux administration, web server and database operations, identity administration and backup and restore practice, whichever platform you pick. Nextcloud requires a supported PHP and database combination and careful handling of third-party apps during upgrades, which favors a team comfortable with application lifecycle work. OpenCloud and oCIS favor a team comfortable with Go-based services, OpenID Connect and filesystem or object storage. Seafile favors a team comfortable with Docker, Kubernetes or binary installs and its library model. Whoever owns the platform also needs a named backup and restore owner and a clear upgrade calendar.
Does Seafile's free three-user tier cover a real team?
Only if your whole team fits within three users, since that is the limit the Seafile download page gives for running Professional Edition without a license file. Beyond that, you need a license for the Professional features, and the Seafile manual lists SAML 2.0, cluster deployment, multi-tenancy, role-based permissions, virus scanning and advanced file search among them. Community Edition 12.0.14 is available for generic Linux as a free alternative for a larger team that does not need those features. Confirm with Seafile which edition and license covers your user count, the features you need, and the support terms before you commit.
Should we pay for Nextcloud Enterprise or rely on community support?
Pay for Nextcloud Enterprise when you need contractual support, longer maintenance, faster response or clustered instance support, and rely on community support when your own team can absorb upgrades and troubleshooting. The code is AGPL-3.0-only either way, so the decision is about service, not features. Nextcloud's pricing page lists Standard, Premium and Ultimate tiers with a 100-user minimum and differing maintenance lifecycles and response times. Compare those terms with your recovery targets, your change windows and the staff you can spare for a major upgrade every four months. Ask Nextcloud for a written quote and for the support terms in writing.
How DeployOpen helps choose and implement a file platform
DeployOpen plans, implements, integrates, hardens, backs up, upgrades, documents and supports self-hosted open-source platforms inside your own cloud accounts, data centers or air-gapped networks. We help you test each candidate against your user count, identity setup and storage design before any production commitment is made.
How we scope
- Engagements are fixed-scope, with deliverables and timelines agreed in writing before work starts.
- The written scope names the user count, identity provider, storage backend and office integration you need.
- We confirm which edition, license terms and support level each candidate requires for your environment.
How we build
- We deploy the chosen platform in your infrastructure, with the database, storage and sync client setup documented.
- We configure directory sign-in, such as LDAP, Active Directory, SAML or OpenID Connect, as the scope defines.
- We test sync behavior, large file handling and backup restores against your own usage pattern before go-live.
How we hand over
- You receive the configuration, operating runbooks and upgrade steps written for your own team to follow.
- We document the backup and restore procedure so recovery does not depend on a single person.
- We walk your administrators through the upgrade path, including any required one-major-version-at-a-time steps.
How we support
- Ongoing support, upgrades and continuous testing are available as retainers after handover.
- A retainer can cover monthly maintenance updates, security fix rollout and periodic restore testing.
- Ask for the support hours, response expectations and upgrade scope to be written into the retainer before signing.
