Annif Hosting Live In 5 Minutes

Run Annif's web UI and REST API on your own server for self-hosted automated subject indexing. xCloud brings up the pinned official Annif 1.4.2 image with managed HTTPS and a persistent projects volume. Then add your vocabularies and models, and restrict access before you load private material.

Deploy your Annif

No terminal
No technical skills needed
No lock-in, cancel anytime

From Sign-Up to a Live Annif Install In Just 3 Easy Steps

Running an indexing service normally means a container, a volume, a certificate and a domain before the first request. This is the same result without assembling any of it.

Step 01
Sign Up
Create your xCloud account and pick Annif from the OneClick catalog. Select a domain. There are no other fields and no credentials to set.
Step 02
We Deploy It For You
One click. We bring up the official Annif 1.4.2 image pinned by immutable digest, mount the annif_projects volume, and publish the web UI and REST API over HTTPS on your domain.
Step 03
Load Your Vocabularies
Open your HTTPS URL, then add a projects.cfg or projects.toml and your vocabularies to the annif_projects volume. Run annif load-vocab, annif train or annif download in the container.

Self-Hosted Subject Indexing, On Your Own Server

Annif runs in full here: the same web UI and REST API you would install by hand, on a server with HTTPS and storage already in place.

Suggested Vocabulary Terms
Send text to the REST API under /v1/ and get suggested vocabulary terms back for indexing and classification.
Web UI At The Root
Use the Annif web UI from your browser to inspect projects and try indexing without writing code.
OpenAPI Spec
Read the API definition at /v1/openapi.json. The Swagger UI at /v1/ui/ returns an error in 1.4.2 because of an upstream bug.
Persistent Projects
Projects, vocabularies and trained models live on the annif_projects volume, so your indexing setup stays in place across restarts.
Larger Documents
A 20 MB request body limit covers larger texts than a typical form post, so long documents can go through the API.
One Container, No Database
A single pinned container with no database sidecar keeps the moving parts small, and debug mode is off in the production configuration.

Everything You Need To Run Your Indexing Service 24/7

Managed hosting for Annif, so the server, HTTPS and storage that keep it online are not your problem.

Annif 1.4.2 deployed instantly
Official image pinned by digest
Managed HTTPS on your domain
Persistent annif_projects volume
Free SSL certificate
30+ server locations
Unused balance refunded

Simple Pricing. Everything Included.

Dedicated Cloud VPS sizes, pre-configured for Annif. Pick the one that fits, and resize any time.

Cloud VPS 6 GB

Cloud VPS 16 GB

Larger models, heavier indexing and more RAM for model backends.

$59.99per month

16 GB RAM
6 vCPU cores
200 GB NVMe SSD
30 TB
Unlimited

Get started

Cloud VPS 24 GB

Annif alongside other self-hosted apps on the same box.

$84.99per month

24 GB RAM
8 vCPU cores
300 GB NVMe SSD
30 TB
Unlimited

Get started

Every size is a dedicated Cloud VPS we provision, patch, monitor and restore. Billed monthly with no lock-in. Annif itself is free and open source under the Apache License 2.0.

Docker hosting

Already Have a Server? Bring Your Own

Connect any VPS, such as DigitalOcean, Vultr, Linode, AWS, Hetzner or bare metal, and deploy Annif on it through the same panel. You pay a per-server management fee instead of a Cloud VPS rental. The image is amd64 only, so pick an x86_64 server.

Free

Start your journey without cost.

$0forever

1 server
10 sites

Start free

Starter

Professional

The same platform, discounted at 6–10 servers.

$4per server / month

6–10 servers
Unlimited sites
All features included
Bring any VPS provider

Get started

Agency

The same platform, discounted at 11+ servers.

$3per server / month

11+ servers
Unlimited sites
All features included
Bring any VPS provider

Get started

Priced per connected server, so your rate adjusts automatically as you add or remove servers. You pay your own provider for the server itself.

Self-managed hosting

Ready To Run Your Own Indexing Service?

Annif on xCloud runs on a dedicated Cloud VPS. We provision the server, HTTPS and volume. You load the vocabularies, decide who gets access and own the data.

Fast Provisioning
Deploy faster using an xCloud Managed Server built with optimized stacks and high-speed SSDs.
Enterprise-grade security
Protect your infrastructure with a free SSL certificate and more advanced security features at no additional cost.
Intuitive Control Panel
From Server creation to application deployment, everything can be managed from our intuitive control panel.

Hear what people are saying about us

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Frequently Asked Questions

Feel free to contact us with any questions or concerns you may have.

What is Annif?

Annif is an open-source tool for automated subject indexing and classification. It has a web UI and a REST API, and it suggests vocabulary terms for texts from the projects, vocabularies and models you load. This template deploys version 1.4.2.

Does Annif include models or vocabularies?

No. It starts with an empty project list. You add a project configuration, your vocabularies, and trained or downloaded models.

Is there a login?

No. The web UI and REST API are open by upstream design. Before you load private models, restrict access with a tool such as Cloudflare Access or a firewall.

Should I enable project learning?

Only if you want anyone who can reach the service to write training data. Leave it off unless that is the intent, because the UI and API have no login.

Where is the REST API and its spec?

The REST API lives under /v1/, and the OpenAPI spec is at /v1/openapi.json. The Swagger UI at /v1/ui/ returns an error in the 1.4.2 image because of an upstream bug, so use the JSON spec instead.

What should I back up?

The whole annif_projects volume, which holds project configuration, vocabularies and trained models. Hugging Face downloads go to a temporary cache that is lost when the container is recreated, so keep any model you need under the data directory on the volume.

Backups in xCloud

Can I remove the containers safely?

Not on a retained install. Do not run docker compose down -v, because it removes the volumes that hold your projects, vocabularies and models. Back up the volume before any maintenance.

How do I upgrade Annif?

Read the upstream release notes first, then bump the readable tag and the image digest together. Upgrades are a deliberate change to the pinned version, not something this page does for you.

How much RAM do I need?

The template's baseline is 1024 MB of RAM, 2 CPU cores and 20 GB of disk. QA measured about 65 MiB of idle use and about 126 MiB with a loaded lightweight project. Large model backends need more RAM, so this page sells the 6 GB tier for headroom and suggests a larger size if you plan heavy models.

Can it run on ARM servers?

No. The pinned image is linux/amd64 only.

What license is Annif under?

Annif is Apache-2.0 licensed. The image also includes optional extras, and upstream notes that YAKE is GPLv3 if you use that extra, so check its terms before relying on it.

What runs alongside Annif?

Nothing. It is a single container with no database sidecar, and the only published service is the Annif web interface on HTTPS.

Can I run other apps on the same server?

Yes. It is a dedicated Cloud VPS, not a locked appliance, so you can deploy other OneClick apps or your own sites beside it as long as the resources are there.

Can I cancel anytime?

Yes. There is no lock-in — cancel any time. Hosting is billed monthly and charged for what you actually use, so when you delete the server the unused balance is refunded to your account, less up to 10% in payment-processing fees.