Which self-hosted file platform fits your Dropbox or SharePoint replacement
If you want one self-hosted hub for files, sharing, calendars and office editing, Nextcloud is the usual starting point, and if your main need is fast sync of large file sets to desktops, Seafile fits better. ownCloud is the choice when you are already on its products or have a specific architecture in mind: Classic 11 if you are comfortable running it under Docker, or Infinite Scale if you want a deployment with no external database. The right answer depends on how many users you will host and how far beyond file storage you need to go, so settle those two questions before comparing feature lists.
Nextcloud is the broad collaboration hub. Its server is AGPL-3.0-only, and its app ecosystem covers talk, office integration and directory login through the LDAP app, with OpenID Connect and SAML backends also documented. Seafile suits teams whose pain is sync speed and library-based sharing. Its Professional Edition runs without a license file for up to 3 users, which makes it a low-cost test bed, but SAML 2.0, clustering and virus scanning are Professional features, so a larger rollout should price them in. For ownCloud, Classic 11 is deployed only with Docker, so your container platform owns the web server, PHP runtime and database lifecycle. Infinite Scale runs without an external database or identity provider for basic deployments, which changes the operating model rather than just the feature set.
Treat user count as the first filter and feature scope as the second. Ask each vendor or partner to confirm, in writing, the edition and license terms for your user count, the directory and SSO method you need, and the office editor you will connect. Then run a pilot with a representative group that includes your external sharing and desktop sync patterns. Confirm the current release lines in each vendor's documentation before you commit, since maintenance windows differ between platforms.
Which platform fits which team size and scope
This table maps five common team scenarios to the platform that fits best and the supplied fact that drives the choice. Read each row against your own user count, identity setup and whether you need apps beyond file sync.
| Scenario | Best fit | Reason |
|---|---|---|
| Small team of up to three users | Seafile | Seafile Professional Edition can run without a license file for up to 3 users, so a small team can test Pro features such as SAML 2.0 at no license cost. Confirm current terms on the Seafile download page before committing. |
| Mid-size office needing a file share with office editing | Nextcloud | Nextcloud is a broad collaboration hub with a large app ecosystem, and its AGPL community edition supports office integration through Nextcloud Office, Collabora Online or ONLYOFFICE Docs. Confirm which office connector your version supports. |
| Large organization needing SSO and clustering | Nextcloud (Enterprise) or Seafile (Professional) | Both document LDAP or Active Directory, SAML and OpenID Connect paths. Seafile lists SAML 2.0 and cluster deployment as Professional features, while Nextcloud Enterprise adds clustered instance support in Premium and above and carries a 100-user minimum. Compare paid tiers against your user count and support needs. |
| Pure file service without apps | Seafile | Seafile organizes files into libraries that sync separately and can each be encrypted with a user-chosen password, which suits a file service without a broad app layer. Check whether you need Seahub extensions such as SeaDoc or the notification server. |
| Team that wants a no-database deployment | ownCloud Infinite Scale | oCIS needs no external database and no external identity provider for basic deployments, and its quickstart embeds LibreGraph Connect. Nextcloud and Seafile both expect a database service in standard setups, so confirm the storage and identity model your team requires. |
How the server stacks differ in practice
The server stack decides who in your team carries the operating load, so start by matching each platform to the people you have. Nextcloud is a conventional PHP application on a database you choose. Nextcloud 35 runs on PHP 8.3, 8.4 or 8.5, with MySQL 8.4 or 9.7, MariaDB 10.11 to 12.3 or PostgreSQL 14 to 18, and it recommends MariaDB 11.8 or PostgreSQL 18. Oracle Database requires an enterprise subscription, and SQLite has limitations. Your team will manage the web server (Apache 2.4 or nginx with php-fpm), PHP upgrades, database backups and the one-major-version-at-a-time upgrade path. Confirm that your database team can support the engine you pick before you commit, because it is the component most likely to be a standards decision in your environment.
ownCloud splits into two very different stacks, and the choice is architectural. ownCloud Classic 11 is deployed only with Docker, with the web server, PHP runtime and database managed inside ownCloud's images. Your team operates containers and the image lifecycle rather than individual components, which suits a platform team already running Docker hosts but limits how much you can tune the internals. ownCloud Infinite Scale is a single Go binary of microservices with no external database and no external identity provider required for basic deployments. Its documented storage backends are S3, NFS and PosixFS, and it is Kubernetes-ready with Helm charts. Operationally it is the lightest to start and the one where storage choice and identity integration become the decisions you must make early, before data lands.
Seafile organizes storage around libraries, and its operating model fits teams that already run containers or Kubernetes. The Seafile admin manual documents Docker single-node setups, Kubernetes deployments with Helm charts and binary installations, with S3, Ceph and OpenStack Swift as storage backends. Each library syncs separately and can be encrypted with a user-chosen password, so your operators must plan key handling and user recovery for encrypted libraries as part of the run book. Clustering is a Professional Edition feature, so confirm whether your high-availability design depends on it before you pick a deployment shape. In every case, ask each vendor or your implementation partner to document the upgrade path, backup scope and which components your staff will own after handover.
Encryption, SSO and office integration side by side
This table sets Nextcloud, ownCloud and Seafile against the four controls most teams check first: licensing, directory and SSO options, library-level encryption and office editing. Read each row as a question to confirm in your own environment, since a documented feature still needs testing against your directory, identity provider and office server.
| Capability | Nextcloud | ownCloud (Classic and oCIS) | Seafile |
|---|---|---|---|
| License of the server core | AGPL-3.0-only for the server, with Nextcloud GmbH selling an Enterprise subscription with support | Classic Server is AGPL-3.0; oCIS is a separate Apache-2.0 platform written in Go | Server core is AGPLv3, Seahub web interface is Apache 2.0, desktop client is GPLv2 |
| LDAP and Active Directory | LDAP app lets directory users appear in Nextcloud and sign in with directory credentials | Confirm directory connector support for your edition and version in the ownCloud documentation before committing | Supported per the Seafile admin manual; confirm the configuration for your directory layout |
| OpenID Connect | Documented as a user authentication backend; confirm the app and version you plan to run | oCIS embeds LibreGraph Connect or connects to external OpenID Connect providers such as Keycloak | Several single sign-on options are listed; confirm whether your provider is covered |
| SAML 2.0 | Documented as a user authentication backend; confirm the app and version you plan to run | Not covered by the supplied facts; confirm with the vendor before relying on it | Listed as a Professional Edition feature, so it needs a paid or Pro-tier deployment |
| Encryption at the library level | Not covered by the supplied facts; confirm server-side and end-to-end options for your version | Not covered by the supplied facts; confirm encryption options for oCIS and Classic separately | Each library can be encrypted with a user-chosen password, which is set per library rather than for the whole server |
| Office editing via WOPI | Office integration is available through Nextcloud Office and documented connectors; confirm Collabora Online or ONLYOFFICE support for your version | oCIS supports collaborative editing through Collabora Online, ONLYOFFICE Docs and Microsoft Office Online Server via WOPI | Documents online office integration with ONLYOFFICE and Collabora Online through the admin manual extensions |
| Paid feature gate for identity and admin | Enterprise subscription adds support tiers; confirm which identity features are tied to a subscription | Confirm which connectors and admin features depend on the Kiteworks-backed commercial offering | SAML 2.0, multi-tenancy and cluster deployment are Professional Edition features |
What is free and what is paid in each platform
The Nextcloud Server code is AGPL-3.0-only, so a self-hosted community install is free to use, with no user cap in the license itself. Nextcloud GmbH sells an Enterprise subscription alongside it, aimed at enterprise, public sector and education buyers. Enterprise comes in three tiers: Standard, Premium and Ultimate, sold with a 100-user minimum. List prices start at 71.29 euros, 104.99 euros and 204.75 euros per user per year respectively for 100 or more users, per Nextcloud's pricing page, with lower rates from 200 users.
- Standard: includes one year of maintenance.
- 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 build: no subscription needed. You carry patching, upgrades and support yourself or through a services partner such as DeployOpen.
- Upgrade rule: major versions cannot be skipped, so the subscription does not remove the need to plan each step.
A license matters here mainly for the support contract and maintenance window, not for the right to run the software. Check with Nextcloud whether a team below 100 users can buy a subscription, and ask which tier covers your required response times.",
ownCloud has two server products under different licenses. The classic ownCloud Server (owncloud/core) is AGPL-3.0, with ownCloud Server 11.0.0 published on July 30, 2026 and 10.16.6 on October 6, 2026. ownCloud Infinite Scale (oCIS) is a separate Apache-2.0 platform written in Go, with v8.2.1 published on October 2, 2026 and v9.0.0-rc.1 on October 12, 2026. Both lines can be run without a paid contract, and the license you pick sets your obligations and the code you can modify and redistribute.
- Classic Server: AGPL-3.0, with ownCloud Classic 11 deployed only with Docker.
- Infinite Scale: Apache-2.0, a separate codebase that does not share the classic server's stack.
- Kiteworks ownership: ownCloud GmbH announced on November 21, 2023 that it was becoming part of Kiteworks. The announcement said the open-source position would remain the same, with a Kiteworks Open Source Program Office operating under the ownCloud brand.
- Paid support: ownCloud sells commercial support and enterprise offerings. Confirm the current edition names, feature lists and prices directly with ownCloud, because this page holds no verified price data.
The Kiteworks note matters if your procurement asks about vendor direction or licensing continuity. Ask ownCloud, in writing, which features are open source in each line, and whether any feature you need is restricted to a commercial build.",
Seafile splits its license by component. The server core is AGPLv3, the Seahub web interface is Apache 2.0, and the desktop client is GPLv2, with the iOS client under Apache 2.0 and the Android client under GPLv3. Community Edition 12.0.14 is listed for generic Linux on the download page. Seafile Professional Edition can run without a license file for up to three users, so a small team can use the Pro build at no cost.
- Professional free tier: no license file needed for up to three users.
- SAML 2.0: listed as a Professional feature in the admin manual.
- Cluster deployment and multi-tenancy: listed as Professional features.
- Virus scanning with ClamAV and advanced file search: listed as Professional features.
- Role-based permissions: also listed as a Professional feature.
A license matters once you pass three users on Professional, or when SAML and clustering are on your requirement list. Ask Seafile for the license terms, the price for your user count, and whether support is included.",
The three platforms gate features differently. Nextcloud sells a support and maintenance tier on top of an AGPL server. ownCloud sells commercial offerings around a split AGPL and Apache product line. Seafile gates identity, clustering, scanning and search behind Professional, with a free three-user allowance. Read the feature lists in each vendor's documentation, because a feature called enterprise in one product can be free in another.
- Identity: Nextcloud documents LDAP, OpenID Connect and SAML backends. Seafile lists SAML 2.0 as Professional. Confirm which of these your build includes.
- Scale: Seafile lists clustering as Professional. Nextcloud ties clustered instance support to Premium.
- Support: Nextcloud response times are tiered. Seafile and ownCloud terms depend on the quote.
- Upgrade effort: a subscription does not remove the need to test upgrades and disable incompatible apps.
- Cost drivers: user count, tier, support hours and whether you need clustering.
Before you sign anything, ask each vendor for a written feature matrix tied to your version, your user count and your identity provider, and confirm each item in a test environment.
What drives the running cost of each platform
Licence fees are only one line in the budget for a self-hosted file platform. The cards below cover the recurring and one-time costs that differ most between Nextcloud, ownCloud and Seafile, and the questions to put to each vendor before you compare quotes.
Subscription fees above the free tier
Nextcloud Enterprise is sold per user per year with a 100-user minimum, and list prices from Nextcloud's pricing page start at 71.29 euros for Standard, 104.99 euros for Premium and 204.75 euros for Ultimate, for 100 or more users. Seafile Professional can run without a license file for up to 3 users, so teams above that count need a paid license. Ask each vendor for the written per-user rate at your exact headcount, the support hours included, and whether the rate changes at 200 users.
Database, cache and storage footprint
Nextcloud 35 runs on MySQL, MariaDB or PostgreSQL, and the database, Redis or APCu caching, PHP-FPM and web server are yours to size and patch unless you use All-in-One. oCIS needs no external database for basic deployments, and Seafile stores its metadata in its own databases. Each design shifts storage, backup and monitoring work to a different team, so price the database service, cache nodes and object storage together, not the file server alone.
Container and Kubernetes operations
ownCloud Classic 11 is deployed only with Docker, with the web server, PHP runtime and database managed inside ownCloud's images. oCIS is Kubernetes-ready with Helm charts, and Seafile documents Docker, Helm and binary installs. The cost here is operator time: who builds image updates, maintains the orchestration layer and handles incidents at 2 a.m. Ask which pattern your platform team already runs and whether the vendor support covers that pattern.
Upgrade effort under the one-major-version rule
Nextcloud does not allow skipping major releases, so an installation several versions behind must be walked forward one major line at a time, with a backup before each step and third-party apps disabled until confirmed compatible. Nextcloud 33 is supported until February 2027, so a file platform rolled out now will need upgrades within its first year. Budget staff days for each step and for app compatibility testing, and ask whether your subscription includes upgrade assistance.
Office server hosting
Collabora Online, ONLYOFFICE Docs and Microsoft Office Online Server are separate services that integrate through WOPI, and each needs its own hosts, TLS, scaling and patching. Collabora's free CODE edition is not recommended for production, so a production office server means a paid Collabora Online subscription or your own support plan. Ask whether the office server is priced separately from the file platform and what capacity your concurrent editors need.
Migration cost if you switch later
Moving users between these platforms is rarely a file copy. Libraries, shares, permissions, sync client sessions, versions and encryption keys all need a mapping, and the destination may use a different storage model. Seafile's libraries can each use their own password encryption, which must be planned for during any move. Ask each vendor and implementer to estimate the migration as a fixed-scope item, and to list what must be re-keyed, re-shared or retrained.
How a Dropbox or SharePoint move typically unfolds
The sequence turns a shortlist into a live platform by confirming scope, proving the stack in a test environment, and moving users in groups so each stage has a clear exit check before the next begins.
Confirm user count and file scope
The business owner and IT lead agree on how many named users, guests and shared folders will move, how much data sits in Dropbox or SharePoint today, and which teams hold regulated content. Platform architects then translate those answers into requirements such as concurrent users, sync client mix and whether any group needs external sharing. The step is done when the requirements sit in a written scope that everyone signs off, including the list of what stays out of the move, such as retired projects or personal folders.
Pick the platform against the written scope
The team compares the three candidates against the requirements: license and paid edition needs, database and storage design, identity integration, office editing and the sync client experience. Security and compliance leads check whether the encryption model and audit features meet policy, and the platform owner confirms the editions and support terms with each vendor in writing. The step closes with a decision record that names the platform, the edition, and the open questions that the test environment must answer.
Stand up a test environment
Engineers build a non-production instance that matches the intended production topology, including the chosen database, cache, storage backend, reverse proxy and any office connector. They configure backups and restore tests, and confirm that the version and supported PHP, database or runtime combinations match the vendor's current requirements for that release. The step is complete when a restore from backup succeeds in the test environment and a sample set of files syncs correctly from each desktop and mobile client the business uses.
Connect the identity source
Identity engineers connect the directory or identity provider, typically LDAP or Active Directory, SAML 2.0 or OpenID Connect, and test group mapping, account provisioning and deprovisioning. They also decide how service accounts, guests and admin roles are created and who approves changes. The step is done when test users sign in with their corporate credentials, a disabled account loses access, and group membership drives the folder permissions the design calls for. Edition-specific features such as SAML in the Seafile Professional Edition should be confirmed against the license in use.
Migrate and validate libraries or folders
Migration engineers copy content from Dropbox or SharePoint into the new platform using the vendor's import method or a scripted transfer, preserving folder structure, owners and sharing intent where the tools allow it. Each library, folder or share is then checked against the source for file counts, sizes, modified dates and permissions, and sample files are opened in the office editor. Anything that cannot be mapped cleanly is logged as an exception with an owner. The step closes when the validation report shows zero unexplained differences and exceptions have an agreed resolution.
Pilot with one group
A single business group, ideally one with mixed desktop, mobile and browser use, works on migrated content for a set period agreed in advance. Support staff record sync conflicts, permission surprises, slow folders and office editing problems, and the platform team tunes client settings, quotas and any search or antivirus settings. Users confirm that their daily workflows still work, and the group's feedback is turned into a short list of fixes. The pilot is done when the open issues are either fixed or accepted with a written workaround.
Cut over and retire the old share
The team schedules a cutover window, runs a final incremental sync from the source, freezes writes on the old share, and points users, links and client configurations at the new platform. Old sharing links are reviewed and either redirected or retired, and the source is set to read-only for an agreed retention period before deletion. The step is complete when a post-cutover backup has been taken, monitoring is confirmed, the runbook and admin documentation are handed over, and the old platform's access and licenses are formally closed.
What implementing each platform involves
Implementation effort differs most in how each platform is upgraded and in what users must manage themselves. For Nextcloud, the core discipline is upgrade hygiene. Nextcloud does not allow skipping major releases, so an administrator must move one major version at a time, back up before every upgrade, and disable third-party apps until each one is confirmed compatible with the target version. Plan a staging instance that mirrors production, a dated backup of both the data directory and the database, and a rollback path. Ask any implementation partner to write the app inventory and the compatibility check into the scope, because the app list is usually where upgrades stall. Nextcloud's system requirements also decide the database and PHP versions you must support before you install anything.
For ownCloud, the first decision is which product you are deploying. Classic 11 is deployed only with Docker, with the web server, PHP runtime and database managed inside ownCloud's images, so your team must be comfortable operating that container model. Infinite Scale (oCIS) is a separate Go platform that runs as a single binary of microservices and needs no external database for a basic deployment, but it changes the storage and identity design. Confirm which storage backend (S3, NFS or PosixFS) and which identity provider (the embedded LibreGraph Connect or an external OpenID Connect provider such as Keycloak) fit your directory setup before work starts. Migrating users and files from Classic to oCIS is a separate project, so treat the choice as a platform decision rather than a version upgrade.
Seafile's main implementation question is the library model. Files are grouped into libraries that sync separately, and each library can be encrypted with a password chosen by the user. Encrypted libraries cannot be recovered by the administrator if the password is lost, so the rollout needs a written policy on which libraries are encrypted, who holds passwords, and how users reset or re-share them. Decide this before onboarding, because changing it later means re-creating libraries. Professional Edition can run without a license file for up to 3 users, and the Seafile manual lists SAML 2.0, clustering, and virus scanning as Professional features, so confirm which features your deployment needs before you size the server. DeployOpen plans and documents these decisions, and implementation work is scoped in writing before it starts, so the scope should name the upgrade plan, the backup targets, the identity model and the encryption policy for your environment.
Questions buyers ask before choosing a file platform
Which self-hosted file platform is free for a small team?
All three platforms have a free route for small teams, but the terms differ. Nextcloud Server is AGPL-3.0-only, so the community edition is free to run, and the cost you pay is for your own infrastructure, administration and any outside help you buy. Seafile Professional Edition can run without a license file for up to 3 users, according to the Seafile download page, so a three-person team can use its paid feature set at no license charge. Classic ownCloud Server is AGPL-3.0 as well. The real question is which features you need. If you need SAML 2.0, clustering or advanced file search, check whether the free route covers them, because those are listed as Seafile Professional features. Confirm current terms on each vendor's download page before you commit.
What does Nextcloud Enterprise add, and does a small team need it?
Nextcloud Enterprise adds a paid subscription on top of the AGPL server code. According to Nextcloud's pricing page, it is sold in Standard, Premium and Ultimate tiers with a 100-user minimum. Standard includes one year of maintenance, Premium adds a maintenance lifecycle of five or more years, extended support hours and clustered instance support, and Ultimate adds support up to 24/7 with response times down to one hour. Teams under the 100-user minimum are generally not the target buyer for this subscription, so a small team usually runs the community edition and buys support from a partner or its own staff. Ask Nextcloud directly what it offers below 100 users, and ask whether the features you need, such as clustering, sit in a tier you can afford.
How long does an implementation take, and what drives the timeline?
No supplied fact gives a general implementation duration for these platforms, so treat any figure you hear with caution. The timeline is driven mostly by the number of users and the migration load, the storage design, and the identity and office integrations you must connect. Expect more work when you move from Dropbox or SharePoint with years of versioned files and permissions, when you need LDAP, SAML or OpenID Connect against an existing directory, and when you add online editing through Collabora Online or ONLYOFFICE Docs. Ask any implementation partner for a written scope with named deliverables and milestones before work starts, and ask which steps are fixed and which are estimated.
Can an internal team run one of these platforms without outside help?
Yes, many internal teams run a file platform alone, but the answer depends on your skills and on the size of the service. A Docker single-node Seafile setup, or Nextcloud All-in-One, can be run by a small team with Linux and container experience, while a Kubernetes or clustered deployment asks for more platform engineering. Plan for recurring work: applying upgrades, backing up before each change, and monitoring the database and storage. Nextcloud requires you to upgrade one major version at a time and disable third-party apps until they are confirmed compatible, so an upgrade calendar must exist. If your team cannot cover that load, buy a retainer for upgrades and support rather than relying on ad hoc help.
How is single sign-on set up on each platform?
Single sign-on is configured per platform, and the options differ. Nextcloud's LDAP app lets LDAP and Active Directory users appear in Nextcloud and sign in with directory credentials, and Nextcloud also documents OpenID Connect and SAML user authentication backends. Seafile supports LDAP and Active Directory and several single sign-on options, while SAML 2.0 is listed as a Professional Edition feature. ownCloud Infinite Scale includes an embedded LibreGraph Connect identity provider or can connect to external OpenID Connect providers such as Keycloak. Before you choose, check which identity provider you run, which protocol it supports, and whether the feature sits in a free or paid tier. Test group mapping and account deprovisioning in a staging environment first.
Does library encryption protect files from server administrators?
Seafile libraries can each be encrypted with a user-chosen password, according to its README, but that is not the same as protection from every administrator. The library password is held by the user, so the server stores encrypted data that the server cannot read without it, which limits what an administrator with server access can see. However, sharing, server-side search, previews, and online editing generally depend on the server reading content, so encrypted libraries can lose features. Nextcloud and ownCloud handle encryption differently and their options should be checked against your threat model. Ask each vendor, in writing, which features stop working on encrypted data and how key recovery works if a user forgets the password.
What does it cost to switch platforms later?
Switching cost comes mostly from people and data, not from licenses. You pay to export users, groups, permissions, shares and version history from the old platform, to map them to the new one, to retrain users, and to reconfigure sync clients and office integrations. Storage design matters: a platform that keeps files in a database, on a filesystem, or in library blocks stores data in different shapes, so a move is rarely a simple copy. Because Nextcloud does not allow skipping major releases during upgrades, a long-delayed upgrade adds steps to any later migration. Ask each vendor and your implementation partner for a migration plan, a test with a copy of your real data, and a written estimate of the work involved before you sign.
How DeployOpen helps choose and implement a file platform
DeployOpen plans, implements, customizes, integrates, hardens, backs up, upgrades, documents and supports self-hosted open-source platforms inside your own infrastructure. For Nextcloud vs ownCloud vs Seafile, we start from your user count, feature scope and identity setup, then build the platform you choose in your cloud account, data center or air-gapped network.
How we scope
- We confirm user count, device mix, and which file workflows need sharing links, external users, or sync only.
- We map your identity setup, such as LDAP or Active Directory, OpenID Connect, or SAML, to each candidate platform.
- Engagements are fixed-scope, with deliverables and timelines agreed in writing before any work starts.
How we build
- We deploy the chosen platform and its database, storage backend, and web server inside your environment.
- We configure SSO, office integration with Collabora Online or ONLYOFFICE Docs, and any required encryption settings.
- We test sync, sharing, permissions, and upgrade paths, and harden the setup before users are moved onto it.
How we hand over
- We document the architecture, admin procedures, backup and restore steps, and the upgrade sequence for your team.
- We deliver a migration plan from Dropbox or SharePoint, including how user data and permissions are moved and checked.
- We walk your administrators through daily operations so your team can run the platform after handover.
How we support
- Ongoing support, upgrades, and continuous testing are available as retainers after the initial handover.
- Retainers can cover major-version upgrades, which Nextcloud requires one major release at a time, with backups taken first.
- We can prepare systems, controls, and evidence for compliance assessments, though independent auditors issue any reports or certifications.
