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GeezerVison is showing professional.wiki — Your Knowledge, Connected and AI-Ready Your Knowledge, Connected and AI-ReadyProfessional MediaWiki hosting, development, and AI tools from open-source experts Our team has developed solutions for 
Products & Tools
AI Assistant
Help your team find answers instantly. An AI chatbot grounded in your wiki content, with source citations so every answer is verifiable.
NeoWiki
Structured knowledge you can query, connect, and build on. Flexible schemas, collaborative editing, and full version history. Open source, built on MediaWiki.
MediaWiki Hosting
GDPR-compliant MediaWiki hosting for teams and organizations, with 100+ extensions and add-ons such as SSO, approval workflows and the AI Assistant.
Admin Panel
Take full control of your wiki without writing code. Configure settings, manage users, enable extensions, and customize appearance.
MCP Server
Connect your wiki to AI tools like Claude Code, ChatGPT, and Cursor. Read, search, and update wiki content directly from your AI workflow.
Our Projects
Over 40 open-source extensions built by our team. Trusted by thousands of wikis for structured data, workflows, approvals, and more. MediaWiki Services
Software Development
Get superior results from the best MediaWiki developers with a proven track record of creating MediaWiki extensions & integrations. 
Theme Development
Make your wiki look great! Use a time-tested responsive MediaWiki theme, or have us create a custom MediaWiki skin for you. 
MediaWiki Hosting
Let us take care of your wiki. We are MediaWiki hosting experts and provide cloud hosting, dedicated hosting, and on-premise hosting. 
MediaWiki Consulting
Bring your wiki to the next level by leveraging our MediaWiki expertise. From strategic planning to wikitext, we have you covered. 
MediaWiki Migration
Migrate your wiki with confidence. We move your MediaWiki to a new home, or we help you migrate from another system to MediaWiki. 
MediaWiki Upgrades
Keep your MediaWiki up-to-date and secure. We offer MediaWiki maintenance services to keep your wiki running smoothly. About Professional Wiki15+ years of experience 300+ clients helped 250+ wikis hosted 48000+ code changes Professional Wiki GmbH is a Berlin-based company with an international team that serves international clients. We are MediaWiki veterans with expertise that includes MediaWiki hosting and MediaWiki software development. Professional Wiki has made significant contributions to MediaWiki, Semantic MediaWiki and Wikibase. Our MediaWiki developers created over 40 MediaWiki extensions and our Wikibase developers created over 8 Wikibase extensions. We also write a lot of MediaWiki documentation. We are a customer-focused agile company. We value professionalism, quality and sustainability. Customer TestimonialsWe host a very large wikibase instance of more than 1.000.000 pages with Professional Wiki. They not only provide reliable hosting and performant query services, but also support us in making the right modeling and technological choices. We experience ProWiki as a reliable wiki hosting provider that responds quickly to all our questions and needs. Working with Professional Wiki is synonymous with efficient communication, excellent responsiveness, and reliable deliverables. We are 100% satisfied. Professional Wiki's hosting has been effortless and their support above and beyond expectation. Accommodating service with a personal touch, warmly recommended. I especially appreciated the care taken in migrating our sizeable legacy wiki. We Also Have Expertise In
Semantic MediaWikiUnlock your wiki's full potential with Semantic MediaWiki (SMW). It transforms your wiki into a versatile and collaborative knowledge base, as done on thousands of wikis. We provide hosting, consulting, training, and development. 
Wikibase and WikidataHarness the Power of Wikibase and Knowledge Graphs. From hosting to consulting, and from data modelling to software development, we have your Wikibase needs covered. 
Artificial Intelligence (AI)Take your wiki to the next level with AI integration. Chatbots, writing assistants, and automatic summaries are some of the new tools at your disposal to improve productivity and manage knowledge like never before. MediaWiki Hosting
Explore our MediaWiki hosting options or request a wiki, ready within 2 business days. Explore Wiki Hosting
MediaWiki for Business
Collaborate, create, connect, and analyze information to empower teamwork across your organization. From Our Blogs
MediaWiki Extensions
Best MediaWiki ExtensionsThere are thousands of extensions available for MediaWiki, so it can be tough to know which ones are the most useful. To help you out, we've compiled a list of the 15 most useful MediaWiki extensions. 
Karsten Hoffmeyer
March 28, 2025 · 5 min read
Articles
Managing Data in MediaWikiWhat software do you need to manage data/knowledge in your wiki? Historically this was Semantic MediaWiki. Is that still the case, and how do the alternatives stack up? 
Jeroen De Dauw
March 30, 2024 · 5 min read
MediaWiki Themes
Best MediaWiki Themes in 2025Find the best MediaWiki theme. Based on our year-long expertise in dealing with many different wikis, our expert-curated list of the best MediaWiki themes eases your search.
Karsten Hoffmeyer
February 5, 2025 · 7 min read
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