Seafile vs ownCloud: Which File Sync to Self-Host?

Quick Verdict

Seafile is the better choice if raw file sync speed and low resource usage matter most. It handles large files and libraries with thousands of items faster than almost anything else in this space. ownCloud Infinite Scale (oCIS) is the pick if you want a batteries-included platform with built-in identity management, no external database, and integrated document collaboration. Both are solid — but they solve different problems at different scales.

The ownCloud Rewrite: What You Need to Know

If you last looked at ownCloud in 2020, forget what you knew. The old PHP-based ownCloud 10.x is deprecated. ownCloud has been completely rewritten in Go as ownCloud Infinite Scale (oCIS) — a microservices architecture that drops the PHP/MySQL stack entirely. No external database. No Apache. No PHP-FPM. Just a single Go binary (or Docker image) that handles everything.

This comparison covers Seafile 13.0 vs ownCloud oCIS 8.0 — both current stable releases as of February 2026.

Feature Comparison

Feature	Seafile 13.0	ownCloud oCIS 8.0
Core language	C (sync), Python (web)	Go (backend), Vue.js (frontend)
External database required	Yes (MariaDB/MySQL)	No (embedded)
Cache service required	Yes (Redis)	No
File versioning	Yes, per-library	Yes, per-space
Client-side encryption	Yes (encrypted libraries)	No (server-side TLS only)
Desktop sync clients	Windows, macOS, Linux	Windows, macOS, Linux
Mobile apps	iOS, Android	iOS, Android
WebDAV support	Yes	Yes
Built-in document editing	SeaDoc (Markdown/rich text)	Collabora/OnlyOffice integration
Built-in identity provider	No (LDAP/SSO optional)	Yes (LibreGraph/embedded IDM)
Spaces/projects	Libraries (similar concept)	Spaces (first-class feature)
File metadata/views	Table, Kanban, Gallery, Map views (v13)	Basic file properties
API	REST API	REST + Graph API (MS Graph compatible)
License	Community: GPLv2, Pro: proprietary	Apache 2.0
Scalability model	Single node (Pro supports clustering)	Microservices, horizontal scale-out

Architecture at a Glance

Seafile uses a traditional three-tier stack: MariaDB for metadata, Redis for caching, and a C-based file server that handles sync with a custom delta-sync protocol. The web interface (Seahub) runs on Python/Django. Seafile 13.0 introduced a Go-based file server option and a metadata server for the new views feature. You also get Caddy as a reverse proxy in the official Docker setup.

ownCloud oCIS is a single Go binary composed of ~30 microservices running in one process by default. It embeds its own identity provider (LibreGraph), stores file metadata in a local filesystem-based backend, and needs no database, cache, or web server. For production, you add Traefik as a reverse proxy for TLS termination. Individual microservices can be split across nodes for horizontal scaling.

Docker Compose Setup

Seafile 13.0

Seafile requires three services: MariaDB, Redis, and the Seafile application server. Create a .env file and a docker-compose.yml.

.env:

# Seafile 13.0 CE Docker Configuration

# --- Images ---
SEAFILE_IMAGE=seafileltd/seafile-mc:13.0-latest
SEAFILE_DB_IMAGE=mariadb:10.11
SEAFILE_REDIS_IMAGE=redis:7

# --- Storage Paths ---
SEAFILE_VOLUME=/opt/seafile-data
SEAFILE_MYSQL_VOLUME=/opt/seafile-mysql/db

# --- Server ---
SEAFILE_SERVER_HOSTNAME=seafile.example.com
SEAFILE_SERVER_PROTOCOL=https
TIME_ZONE=Etc/UTC

# --- Database ---
SEAFILE_MYSQL_DB_HOST=seafile-mysql
SEAFILE_MYSQL_DB_USER=seafile
SEAFILE_MYSQL_DB_PASSWORD=CHANGE_ME_db_password
INIT_SEAFILE_MYSQL_ROOT_PASSWORD=CHANGE_ME_root_password
SEAFILE_MYSQL_DB_CCNET_DB_NAME=ccnet_db
SEAFILE_MYSQL_DB_SEAFILE_DB_NAME=seafile_db
SEAFILE_MYSQL_DB_SEAHUB_DB_NAME=seahub_db

# --- Cache (Redis is default in v13+) ---
CACHE_PROVIDER=redis
SEAFILE_REDIS_HOST=seafile-redis
SEAFILE_REDIS_PORT=6379
SEAFILE_REDIS_PASSWORD=CHANGE_ME_redis_password

# --- Admin Account (first run only) ---
INIT_SEAFILE_ADMIN_EMAIL=[email protected]
INIT_SEAFILE_ADMIN_PASSWORD=CHANGE_ME_admin_password

# --- JWT (minimum 32 characters, required) ---
JWT_PRIVATE_KEY=CHANGE_ME_generate_a_random_string_at_least_32_chars

docker-compose.yml:

services:
  seafile-mysql:
    image: ${SEAFILE_DB_IMAGE}
    container_name: seafile-mysql
    environment:
      MYSQL_ROOT_PASSWORD: ${INIT_SEAFILE_MYSQL_ROOT_PASSWORD}
      MYSQL_LOG_CONSOLE: "true"
    volumes:
      - ${SEAFILE_MYSQL_VOLUME}:/var/lib/mysql
    networks:
      - seafile-net
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      interval: 20s
      timeout: 10s
      retries: 5
      start_period: 30s

  seafile-redis:
    image: ${SEAFILE_REDIS_IMAGE}
    container_name: seafile-redis
    command: ["redis-server", "--requirepass", "${SEAFILE_REDIS_PASSWORD}"]
    volumes:
      - redis-data:/data
    networks:
      - seafile-net
    restart: unless-stopped

  seafile:
    image: ${SEAFILE_IMAGE}
    container_name: seafile
    volumes:
      - ${SEAFILE_VOLUME}:/shared
    environment:
      DB_HOST: ${SEAFILE_MYSQL_DB_HOST}
      DB_ROOT_PASSWD: ${INIT_SEAFILE_MYSQL_ROOT_PASSWORD}
      SEAFILE_MYSQL_DB_USER: ${SEAFILE_MYSQL_DB_USER}
      SEAFILE_MYSQL_DB_PASSWORD: ${SEAFILE_MYSQL_DB_PASSWORD}
      SEAFILE_MYSQL_DB_CCNET_DB_NAME: ${SEAFILE_MYSQL_DB_CCNET_DB_NAME}
      SEAFILE_MYSQL_DB_SEAFILE_DB_NAME: ${SEAFILE_MYSQL_DB_SEAFILE_DB_NAME}
      SEAFILE_MYSQL_DB_SEAHUB_DB_NAME: ${SEAFILE_MYSQL_DB_SEAHUB_DB_NAME}
      SEAFILE_SERVER_HOSTNAME: ${SEAFILE_SERVER_HOSTNAME}
      SEAFILE_SERVER_PROTOCOL: ${SEAFILE_SERVER_PROTOCOL}
      TIME_ZONE: ${TIME_ZONE}
      JWT_PRIVATE_KEY: ${JWT_PRIVATE_KEY}
      INIT_SEAFILE_ADMIN_EMAIL: ${INIT_SEAFILE_ADMIN_EMAIL}
      INIT_SEAFILE_ADMIN_PASSWORD: ${INIT_SEAFILE_ADMIN_PASSWORD}
      CACHE_PROVIDER: ${CACHE_PROVIDER}
      SEAFILE_REDIS_HOST: ${SEAFILE_REDIS_HOST}
      SEAFILE_REDIS_PORT: ${SEAFILE_REDIS_PORT}
      SEAFILE_REDIS_PASSWORD: ${SEAFILE_REDIS_PASSWORD}
      ENABLE_SEADOC: "false"
      ENABLE_NOTIFICATION_SERVER: "false"
    ports:
      - "8080:80"
    depends_on:
      seafile-mysql:
        condition: service_healthy
      seafile-redis:
        condition: service_started
    networks:
      - seafile-net
    restart: unless-stopped

networks:
  seafile-net:
    driver: bridge

volumes:
  redis-data:

Start it:

docker compose up -d

After the first start, access the web UI at http://your-server-ip:8080 and log in with the admin email and password from your .env file. The INIT_* variables are only used on first run.

ownCloud oCIS 8.0

oCIS runs as a single container with no external dependencies. You need to initialize the config first, then start the service.

Step 1: Create directories and initialize config

mkdir -p /opt/ocis/ocis-config /opt/ocis/ocis-data

docker run --rm -it \
    --mount type=bind,source=/opt/ocis/ocis-config,target=/etc/ocis \
    --mount type=bind,source=/opt/ocis/ocis-data,target=/var/lib/ocis \
    owncloud/ocis:8.0.0 init

This generates /opt/ocis/ocis-config/ocis.yaml with a random admin password. Note the password printed to the terminal — you need it to log in.

Step 2: Docker Compose

docker-compose.yml:

services:
  ocis:
    image: owncloud/ocis:8.0.0
    container_name: ocis
    environment:
      # Set to "false" for production with valid TLS certificates
      OCIS_INSECURE: "true"
      # Your external URL -- MUST use https
      OCIS_URL: "https://ocis.example.com"
      OCIS_LOG_LEVEL: "error"
      # Bind to all interfaces inside the container
      PROXY_HTTP_ADDR: "0.0.0.0:9200"
    volumes:
      # Config generated by ocis init
      - /opt/ocis/ocis-config:/etc/ocis
      # Persistent file storage
      - /opt/ocis/ocis-data:/var/lib/ocis
    ports:
      - "9200:9200"
    restart: unless-stopped

networks:
  default:
    driver: bridge

Start it:

docker compose up -d

Access the web UI at https://your-server-ip:9200. Log in with admin and the password from the init step. The self-signed certificate will trigger a browser warning — accept it or put a reverse proxy with a real certificate in front.

That is the entire stack. No database container, no cache container, no web server. One image, one volume for config, one volume for data.

Performance and Resource Usage

This is where Seafile pulls ahead — and it is not close.

Metric	Seafile 13.0	ownCloud oCIS 8.0
RAM (idle)	~250 MB (all services)	~150 MB
RAM (active, 10 users)	~400-600 MB	~300-500 MB
RAM (active, 100+ users)	~1-2 GB	~1-2 GB
CPU (idle)	Low	Very low
Disk (application)	~1.5 GB (images + DB)	~500 MB (single image)
Large file sync (10 GB+)	Excellent — delta sync, chunked transfer	Good — standard WebDAV chunking
Many small files (10,000+)	Excellent — library-based batching	Good — individual file operations
Initial sync speed	Fast — custom protocol	Moderate — WebDAV-based

Seafile’s custom sync protocol uses delta transfers and deduplication at the block level. When you change 10 bytes in a 1 GB file, Seafile transfers only the changed blocks — not the whole file. This makes it dramatically faster for large file workflows (video editing, datasets, VM images).

oCIS uses standard WebDAV for sync, which is broadly compatible but lacks block-level delta sync. For typical office document workflows, the difference is negligible. For large media files, Seafile wins outright.

oCIS has the lighter footprint at idle because it is a single process with no database or cache overhead. But Seafile’s total stack (MariaDB + Redis + app) remains surprisingly lean for what it delivers.

Storage Model

Seafile organizes files into libraries — each library is an independently syncable, encryptable, and shareable unit. You choose which libraries to sync to each device. This design is elegant for power users who want fine-grained control over what syncs where, and it enables the encrypted library feature where you set a password that the server never sees.

oCIS uses Spaces — collaborative workspaces that function like team drives. Spaces are a first-class concept with their own settings, members, and quotas. There is also a personal space for each user. The model is closer to Google Drive or OneDrive team drives, which makes it intuitive for organizations migrating from those services.

Document Collaboration

Seafile 13.0 ships with SeaDoc, a built-in document editor supporting Markdown and rich text. It is lightweight and works without external dependencies. For full office document editing (DOCX, XLSX), you add Collabora or OnlyOffice as a separate container.

oCIS 8.0 does not include a built-in editor but has official integrations for both Collabora and OnlyOffice. The deployment examples include pre-configured Compose files for either. If document collaboration is central to your workflow, oCIS arguably has the more mature integration story because ownCloud has invested heavily in this area.

Client-Side Encryption

Seafile offers client-side encrypted libraries — you set a password, and files are encrypted before they leave your device. The server stores only ciphertext. This is a genuinely zero-knowledge implementation for those libraries.

oCIS does not support client-side encryption. Data is encrypted in transit (TLS) and you can encrypt the underlying storage, but the server always has access to the plaintext files.

If zero-knowledge encryption is a requirement, Seafile is your only option here.

Ecosystem and Extensibility

Seafile is focused. It does file sync, sharing, and (as of v13) structured metadata views. It does not try to be a calendar, contacts, or email server. This focus means fewer moving parts and less surface area for bugs.

oCIS is more ambitious. The Microsoft Graph API compatibility means it works with third-party tools expecting OneDrive-like APIs. Built-in identity management (LibreGraph) means you get user provisioning, groups, and SSO without bolting on an external LDAP server. If you need a platform that does more than sync files, oCIS offers more out of the box.

Neither matches Nextcloud’s app ecosystem. If you need a kitchen-sink platform with 300+ apps, look at Nextcloud instead.

Use Cases

Choose Seafile If…

• You handle large files regularly (video, datasets, disk images) and need fast delta sync
• Client-side encryption is a requirement
• You want the leanest, fastest file sync with minimal overhead
• Your team is technical and comfortable with the library-based organization model
• You already run MariaDB/MySQL for other services and adding another database is free
• You need the new structured metadata views (Kanban, Gallery, Map) from Seafile 13

Choose ownCloud oCIS If…

• You want the simplest possible deployment — one container, no database, no cache
• You need built-in user management and identity without external LDAP
• Your team is migrating from Google Drive or OneDrive and expects a similar UX with Spaces
• Microsoft Graph API compatibility matters for your tooling
• Horizontal scalability is a future requirement (oCIS microservices can split across nodes)
• You plan to integrate Collabora or OnlyOffice for real-time document editing

Final Verdict

Seafile is the better self-hosted file sync engine. Its delta sync protocol, client-side encryption, and raw transfer speed are unmatched. If your primary need is “sync files fast and reliably,” Seafile 13.0 delivers.

oCIS is the better self-hosted file platform. Its zero-dependency deployment, built-in identity management, Spaces model, and Graph API make it a more complete workplace tool. If you are replacing Google Workspace or OneDrive for a team, oCIS fits that shape better.

For a solo user or small group that mostly cares about syncing files and keeping them private, go with Seafile. For an organization that needs user management, collaboration features, and a familiar drive-like interface without running Nextcloud’s heavier stack, go with oCIS.

Related

• How to Self-Host ownCloud oCIS with Docker
• Best Self-Hosted File Sync & Storage
• How to Self-Host Nextcloud
• How to Self-Host Seafile
• Nextcloud vs Syncthing
• Replace Google Drive
• Replace Dropbox
• Docker Compose Basics