Semantic MediaWiki Hosting
A production Semantic MediaWiki for your organization's structured knowledge: fully managed, hosted in the EU, and yours to export at any time.
Our Semantic MediaWiki clients include
Who it is for
Processes, products, equipment, projects and contacts as structured pages, entered through forms and pulled together in lists and tables anywhere in the wiki. The CDQ Wiki runs on our hosting.
Thousands of entries about people, works, places or organizations, each with the same structure, cross-referenced and queryable. The TheaterEncyclopedie of the University of Amsterdam runs on our hosting.
Places, people, events and sources, with maps and timelines generated from the data. The Stadtgeschichtslexikon Ingolstadt runs on our hosting.
Why Semantic MediaWiki
Facts are annotated as properties right on the page, so editing the page updates the data.
Put a query on any page and get a list, table or count of the matching pages that updates itself as pages change.
Page Forms turns your templates into forms, so every entry is made the same way.
Query results render as maps, timelines, calendars and charts, not only as tables.
Full version history, and accounts, groups, permissions, discussion pages and watchlists for working together.
Still comparing? Read Wikibase or Semantic MediaWiki?
Open source, open data
Semantic MediaWiki is open source, and everything you put in comes back out in open formats.
MediaWiki, Semantic MediaWiki, Page Forms and the result format extensions are free and open source software: no licence fees and no lock-in.
Every query can output JSON and CSV, and the semantic data of any page is served as RDF.
Map your properties to schema.org, FOAF, Dublin Core or your own vocabulary, so other systems understand the exported data.
The data is yours to take: a standard MediaWiki export at any time, and a full export whenever you leave.
What you get
Included
Semantic MediaWiki on MediaWiki, with templates and Lua.
Page Forms, with autocompletion and validation.
Semantic Result Formats, Maps and Modern Timeline.
OpenSearch-backed search across your pages.
Configure Semantic MediaWiki and enable extensions yourself.
Add-ons
Built for production
Single-tenant: nothing is shared with other customers.
Semantic MediaWiki's maintenance jobs run on your wiki every night, and when an upgrade requires a rebuild of the semantic data, we run it.
MediaWiki, Semantic MediaWiki and its extensions upgraded by us, security updates applied as they are released.
Encrypted offsite backups, 24/7 monitoring and a 99.9% availability commitment.
Data residency in the EU by default, other regions on request.
You administer the wiki and the admin panel. We deploy the extensions and settings you need.
You get everything from our standard MediaWiki hosting, including security and data protection and the service level agreement and data processing agreement.
Why host Semantic MediaWiki with us
Professional Wiki was founded by Semantic MediaWiki maintainers Jeroen De Dauw and Karsten Hoffmeyer. Since 2009 we have helped many organisations adopt Semantic MediaWiki, built key extensions for it, and run Semantic MediaWiki wikis with over half a million pages in production.
We created Semantic MediaWiki extensions used across the ecosystem, including Maps, Modern Timeline, Semantic Wikibase and Network, and contributed to dozens of others, Semantic Result Formats among them.
Data modeling and consulting, data import and custom development and branding, from the same team that runs your wiki.
Customer Testimonials
Professional Wiki has been hosting the TheaterEncyclopedie for years now and they have recently developed an extension for it quickly and well. They fully live up to their name: they are professional and know everything about (Semantic) MediaWiki!
We experience ProWiki as a reliable wiki hosting provider that responds quickly to all our questions and needs.
I would like to express my great appreciation for the excellent update of our wiki and the smooth migration to the new hosting. Your professionalism and commitment made this transition a complete success.
The wiki setup was exemplary, thanks also to Professional Wiki's first-class service and support. Highly recommended!
Working alongside Professional Wiki, we've seen firsthand their deep technical knowledge in Semantic MediaWiki. They implemented the Network and Modern Timeline extensions for us. Due to the high quality of coding, these extensions are still easy to maintain today.
Pricing
From 249 EUR per month
Semantic MediaWiki hosting, queries, forms and result formats included.
Larger wikis need more infrastructure, and add-ons are priced with your quote. Standard hosting terms and the Enterprise option are on the hosting page.
Add-ons
Priced separately, on top of your plan.
We map your existing data to properties and templates and import it, from spreadsheets to legacy databases.
Your users log in with Microsoft, Google, Okta, or another OpenID Connect identity provider.
A copy of your encrypted backups goes to storage you control.
Extensions, integrations, and features built for your wiki.
AI and integration
Both are add-ons. Nothing AI-related runs on your wiki unless you order it.
Lets AI tools such as Claude and ChatGPT search your wiki, read pages, run Semantic MediaWiki queries, and create or edit pages. We run the server next to your wiki.
Add-onYour users ask questions in plain language and get answers grounded in your wiki, with sources.
Add-onMigrating an existing wiki
We move your Semantic MediaWiki to our hosting with your data, history and user accounts intact.
Frequently asked questions
Resources
Documentation, community and the software itself.
Google Maps and Leaflet maps from your semantic data.
A timeline result format for Semantic MediaWiki.
Query your wiki from Claude and other AI tools through the MediaWiki MCP Server.
How the two compare and when to pick which.
Hosting, development and consulting from one team.