# Professional Wiki

> provider of enterprise wiki software solutions and services

**Wikidata**: [Q66480889](https://www.wikidata.org/wiki/Q66480889)  
**Source**: https://4ort.xyz/entity/professional-wiki

## Summary

Professional Wiki is an organization established on January 1, 2019 [1]. Its headquarters are located in Berlin [2]. The legal form of Professional Wiki is a Gesellschaft bürgerlichen Rechts [2].The organization was founded by Jeroen De Dauw and Karsten Hoffmeyer [1].

## Summary
Professional Wiki is a provider of enterprise wiki software solutions and services, operating primarily within the software and information technology industries. The company specializes in developing and managing computer-based information systems, with a focus on structured data and the Semantic Web.

## Key Facts
*   **Inception**: Professional Wiki was founded on January 1, 2019.
*   **Founders**: The company was founded by Jeroen De Dauw and Karsten Hoffmeyer.
*   **Headquarters**: Professional Wiki is headquartered in Berlin, Germany, at Tieckstraße 24, 10115 Berlin.
*   **Legal Form**: Initially established as a Gesellschaft bürgerlichen Rechts (GbR), it transitioned to a Gesellschaft mit beschränkter Haftung (GmbH) on September 21, 2022.
*   **Industry Focus**: Its primary industries include software, information technology, information technology consulting, and the broader technology industry.
*   **Core Offerings**: Professional Wiki provides enterprise wiki software solutions and related services.
*   **MediaWiki Extensions**: The company has developed several MediaWiki extensions, such as External content, MediaWiki SCSS library, SPARQL, Page Approvals, Persistent Page Identifiers, Wikibase Faceted Search, and Wikibase Constraint Violations Export.
*   **Online Presence**: Its primary website is professional.wiki, and it maintains active profiles on platforms like Twitter (@ProWikis), Facebook (ProfessionalWiki), and LinkedIn (professional-wiki).

## FAQs
### Q: What does Professional Wiki do?
A: Professional Wiki provides enterprise wiki software solutions and services. They focus on the development, management, and use of computer-based information systems, particularly within the software and information technology sectors.

### Q: Who founded Professional Wiki and when?
A: Professional Wiki was founded on January 1, 2019, by Jeroen De Dauw and Karsten Hoffmeyer. Jeroen De Dauw serves as CEO and CTO, while Karsten Hoffmeyer is the CFO.

### Q: Where is Professional Wiki located?
A: Professional Wiki's headquarters are located in Berlin, Germany. The specific address is Tieckstraße 24, 10115 Berlin.

### Q: What kind of software solutions does Professional Wiki offer?
A: Professional Wiki offers enterprise wiki software solutions and services. They are known for developing various MediaWiki extensions that enhance functionality for structured data, content embedding, SPARQL queries, and page management.

### Q: What are Professional Wiki's main areas of expertise?
A: Professional Wiki's main areas of expertise include the Semantic Web, Semantic MediaWiki, structured data, and enterprise wiki implementations. They also specialize in information technology consulting.

## Why It Matters
Professional Wiki plays a significant role in the landscape of enterprise information management by providing specialized software solutions and services for organizations. In an era where efficient knowledge organization and data accessibility are paramount, their focus on enterprise wikis, structured data, and the Semantic Web addresses critical needs for businesses seeking to manage complex information systems. By developing and supporting MediaWiki extensions, Professional Wiki contributes to the open-source ecosystem, enabling enhanced functionalities like embedding external content, executing SPARQL queries, and implementing robust page approval workflows. This work helps organizations leverage wiki technology beyond basic collaboration, transforming them into powerful tools for data integration, knowledge representation, and intelligent search, thereby improving operational efficiency and decision-making processes. Their expertise in information technology consulting further ensures that these advanced solutions are effectively implemented and tailored to specific business requirements.

## Notable For
*   **Enterprise Wiki Specialization**: Dedicated provider of enterprise wiki software solutions and services, catering to organizational needs for structured information management.
*   **MediaWiki Extension Development**: Extensive contributions to the MediaWiki ecosystem through the creation of several key extensions, including External content, SPARQL, Page Approvals, and Wikibase Faceted Search.
*   **Semantic Web and Structured Data Focus**: Expertise in Semantic Web technologies, Semantic MediaWiki, and structured data, enabling advanced knowledge representation and querying capabilities.
*   **Legal Form Evolution**: Transitioned from a Gesellschaft bürgerlichen Rechts (GbR) to a Gesellschaft mit beschränkter Haftung (GmbH), reflecting growth and formalization.
*   **Global Reach with German Roots**: Headquartered in Berlin, Germany, providing services in the global software and IT consulting market.

## Body

### Overview
Professional Wiki is an entity classified as an enterprise, business, software company, and organization. It operates as a provider of enterprise wiki software solutions and services. The company's main subject areas include the Semantic Web, Semantic MediaWiki, structured data, and enterprise wikis.

### Founding and Structure
Professional Wiki was founded on January 1, 2019. The founders are Jeroen De Dauw and Karsten Hoffmeyer. Jeroen De Dauw holds the roles of chief executive officer and chief technology officer, while Karsten Hoffmeyer serves as chief financial officer, both since the company's inception.

The company's legal form initially was a Gesellschaft bürgerlichen Rechts (GbR) from January 1, 2019, until September 21, 2022. It then transitioned to a Gesellschaft mit beschränkter Haftung (GmbH) starting September 21, 2022, which is its current preferred legal form.

Professional Wiki is located and was formed in Berlin, Germany. Its headquarters are specifically at Tieckstraße 24, 10115 Berlin, with geographical coordinates 52.5300859 latitude and 13.3909719 longitude.

The official name of the company was "Professional.Wiki – Jeroen De Dauw & Karsten Hoffmeyer GbR" from January 1, 2019, to December 31, 2022. Since January 1, 2023, its preferred official name is "Professional Wiki GmbH."
Aliases for the entity include Professional.Wiki, PW, ProfessionalWiki, Professional Wiki GmbH, ProWiki, and Professional.Wiki – Jeroen De Dauw & Karsten Hoffmeyer GbR.
Trading names include "Professional Wiki" (since January 1, 2019) and "ProWiki" (since April 26, 2022).

### Industry and Field of Work
Professional Wiki operates within the software industry, information technology industry, information technology consulting, and the broader technology industry. Its specific field of work is information technology consulting.

### Products and Services
Professional Wiki provides enterprise wiki software solutions and services. It is involved in the development, management, and use of computer-based information systems.

The company has created or developed several MediaWiki extensions:
*   **External content**: Allows embedding content on wiki pages by specifying a URL.
*   **MediaWiki SCSS library**: A PHP/Composer library providing a ResourceLoader module to MediaWiki for compiling SCSS.
*   **SPARQL**: Enables executing SPARQL queries and templating their results via Lua within MediaWiki.
*   **Page Approvals**: Facilitates approving pages and automatically revoking approvals upon content changes.
*   **Persistent Page Identifiers**: Allows assigning permanent identifiers to pages.
*   **Wikibase Faceted Search**: Enhances the "Search" special page with faceted search capabilities, enabling result filtering by instance types or statement values.
*   **Wikibase Constraint Violations Export**: Allows exporting constraint violations from the WikibaseQualityConstraints extension to JSON via a maintenance script.

### Contact and Online Presence
*   **Preferred Website**: https://professional.wiki/ (multiple languages, active since December 30, 2018)
*   **Other Websites**: https://www.pro.wiki/ (English, since April 26, 2022), https://www.wikibase.consulting/ (English, since October 2, 2020)
*   **Email Address**: info@professional.wiki
*   **Phone Number**: +49-30-55874265
*   **Twitter**: @ProWikis (handle: 1092305734598045696, since February 5, 2019)
    *   Followers: 4447 (June 18, 2020), 4239 (January 7, 2021), 4044 (November 19, 2022), 4205 (January 10, 2023), 3991 (May 17, 2023), 3914 (July 19, 2024)
*   **Facebook**: ProfessionalWiki
*   **LinkedIn**: professional-wiki (since January 1, 2019)
*   **YouTube**: ProfessionalWiki (handle: UCEzQsMM_1kaQRYz0tem2kFQ, since August 11, 2020)
    *   Subscribers: 47 (May 17, 2023)
*   **GitHub**: ProfessionalWiki (since January 1, 2019)
*   **Medium**: ProWiki
*   **Mastodon**: ProWiki@mastodon.social (since November 16, 2022)
    *   Followers: 0 (January 10, 2023), 1 (February 12, 2024)
*   **Bluesky**: prowiki.bsky.social (since January 3, 2024)
*   **Preferred Domain Name**: professional.wiki
*   **Other Domain Names**: pro.wiki, wikibase.consulting
*   **Official Blog URL**: https://professional.wiki/blog (English), https://www.pro.wiki/blog (English)
*   **Official Jobs URL**: https://professional.wiki/en/jobs (English)
*   **Impressum URL**: https://professional.wiki/de/impressum (German), https://www.pro.wiki/imprint (German)
*   **Privacy Policy URL**: https://professional.wiki/en/privacy-policy (English), https://professional.wiki/de/datenschutz (German)

### Identifiers
*   **CAGE Code**: CNAH4 (since December 15, 2022)
*   **D-U-N-S Number**: 344371979 (since December 13, 2022)
*   **EU VAT Number**: DE356328845 (since January 1, 2023)
*   **Record Number (Germany)**: 246887 (Local Court Charlottenburg, Section B of the Commercial Register, since October 24, 2022)
*   **European Unique Identifier**: DEF1103R.HRB246887
*   **Creditor Identifier**: DE72ZZZ00002690326

### Logo
*   **URL**: https://commons.wikimedia.org/wiki/Special:FilePath/ProfessionaWikiWordmarkLogo.png (referenced July 10, 2024)

```json
{
  "@context": "https://schema.org",
  "@type": "SoftwareCompany",
  "name": "Professional Wiki",
  "description": "provider of enterprise wiki software solutions and services",
  "url": "https://professional.wiki/",
  "logo": "https://commons.wikimedia.org/wiki/Special:FilePath/ProfessionaWikiWordmarkLogo.png",
  "sameAs": [
    "https://twitter.com/ProWikis",
    "https://www.facebook.com/ProfessionalWiki",
    "https://www.linkedin.com/company/professional-wiki",
    "https://www.youtube.com/channel/UCEzQsMM_1kaQRYz0tem2kFQ",
    "https://github.com/ProfessionalWiki",
    "https://medium.com/@ProWiki",
    "https://mastodon.social/@ProWiki",
    "https://prowiki.bsky.social"
  ],
  "foundingDate": "2019-01-01",
  "founder": [
    {
      "@type": "Person",
      "name": "Jeroen De Dauw"
    },
    {
      "@type": "Person",
      "name": "Karsten Hoffmeyer"
    }
  ],
  "address": {
    "@type": "PostalAddress",
    "streetAddress": "Tieckstraße 24",
    "addressLocality": "Berlin",
    "postalCode": "10115",
    "addressCountry": "Germany"
  },
  "contactPoint": [
    {
      "@type": "ContactPoint",
      "telephone": "+49-30-55874265",
      "contactType": "customer service"
    },
    {
      "@type": "ContactPoint",
      "email": "mailto:info@professional.wiki",
      "contactType": "customer service"
    }
  ],
  "industry": [
    "software industry",
    "information technology",
    "information technology consulting",
    "technology industry"
  ],
  "legalName": "Professional Wiki GmbH",
  "vatID": "DE356328845",
  "hasOfferCatalog": {
    "@type": "OfferCatalog",
    "name": "Services",
    "itemListElement": [
      {
        "@type": "Offer",
        "itemOffered": {
          "@type": "Service",
          "name": "enterprise wiki software solutions"
        }
      },
      {
        "@type": "Offer",
        "itemOffered": {
          "@type": "Service",
          "name": "enterprise wiki services"
        }
      }
    ]
  }
}

## References

1. [Source](https://professional.wiki/en/imprint)
2. [Source](https://professional.wiki/en/about)
3. YouTube
4. [Source](https://www.dnb.com/de-de/upik-profile/344371979/professional_wiki_gmbh)
5. [Source](https://cage.dla.mil/Search/Details?id=17485110)
6. [Source](https://professional.wiki/)
7. [Source](https://www.pro.wiki/)
8. X
9. mastodon.social
10. LinkedIn
11. Wikibase World
12. [Source](https://www.pro.wiki/imprint)
13. [Internet Domains Wikibase](https://domains.wikibase.cloud/entity/Q312947)
14. [Internet Domains Wikibase](https://domains.wikibase.cloud/entity/Q312948)
15. [Internet Domains Wikibase](https://domains.wikibase.cloud/entity/Q312949)
16. [Source](https://www.northdata.de/Professional%20Wiki%20GmbH,%20Berlin/Amtsgericht%20Charlottenburg%20(Berlin)%20HRB%20246887%20B)