Our Projects
Over 40 open-source MediaWiki extensions and counting, built for our clients and shared with the community.
MediaWiki Extensions
Open-source MediaWiki extensions created for our clients via our MediaWiki extension development services
Wikibase Faceted Search
Created in 2025 for the NFDI-consortium MaRDI
Easily filter and find your Wikibase data.
Automated Values
Created in 2022 for the Luxembourg Ministry of Culture
Wikibase extension that allows defining rules to automatically set labels or aliases based on Statement values.
Page Approvals
Created in 2024 for a major multinational corporation
Increase trust in your knowledge base via approval workflows for wiki pages.
Persistent Page Identifiers
Created in 2024 for Meemoo and Podiumkunsten
Reference your wiki pages with stable, unique identifiers that remain unchanged even when pages are renamed, moved, or deleted and restored.
Wikibase Export
Created in 2022 for the University of Mannheim
Wikibase Export adds a user-friendly and customizable export interface to Wikibase.
Rules
Created in 2025 for a major multinational corporation
Automated page categorization based on rules defined via a user-friendly configuration interface
SPARQL
Created in 2023 for Freie Universität Berlin
Run SPARQL queries and template their results via Lua.
Slash Commands
Created in 2023 for a major multinational corporation
Increase your productivity with slash commands integrated into MediaWiki's visual editor.
External Content
Created in 2022 for Pega Systems
Allows embedding and rendering markdown files into wiki pages. Has special integration with GitHub and Bitbucket.
Wikibase RDF
Created in 2022 for the Wikibase Stakeholder Group
Wikibase extension that allows defining RDF mappings for Wikibase Entities.
Wikibase EDTF
Created in 2021 for the Luxembourg Ministry of Culture
Wikibase extension for the Extended Date/Time Format (EDTF) Specification that is specifically designed to process more complex dates and times.
Wikibase Local Media
Created in 2020 for the Rhizome
Adds support for local media files to Wikibase via a new data type.
Network
Created in 2020 for KDZ Centre for Public Administration Research
Extension for visualizing connections between wiki pages via an interactive network graph.
Semantic Wikibase
Created in 2020 for Frans AL van der Horst
Make Wikibase items and properties available in Semantic MediaWiki.
Modern Timeline
Created in 2019 for KDZ Centre for Public Administration Research
Provides a modern timeline visualization for Semantic MediaWiki as a result format.
SubPageList
Created in and maintained since 2010
Lightweight MediaWiki extension to display lists of subpages via a customizable parser function.
SimpleBatchUpload
Maintained since 2019
Adds a simple upload interface for uploading multiple files that can be reached via embeddable buttons.
Maps
Created in 2009 during Google Summer of Code
Google Maps and Leaflet integration for MediaWiki. Embed dynamic and highly customizable maps into your wiki. Features a visual map editor and integration with Semantic MediaWiki.
Skins & Libraries
Other open-source projects by Professional Wiki
Chameleon Skin
Created in 2014
We maintain Chameleon, the most popular mobile and responsive MediaWiki skin. Chameleon is highly customizable, often used by companies to brand their corporate wikis in line with their corporate identity.
EDTF Library for PHP
Maintained since 2021
A PHP library for parsing, representing, and working with values that follow the Extended Date/Time Format specification.
Customer Testimonials
Professional Wiki provided Rhizome with competent and timely custom development work. Making use of all the tools that are available to open source developers today, the team built extensions that follow modern software design guidelines, are easy to install, configure, and maintain, and include good documentation and automated testing. Quite unique in the Mediawiki space!
We wished to display SPARQL query results in our Wikibase and commissioned Professional Wiki to develop a solution. They created a flexible extension that is just what we needed.
Professional Wiki recently developed an extension for TheaterEncyclopedie quickly and well. They fully live up to their name: they are professional and know everything about (Semantic) MediaWiki!
Professional Wiki helped us to fine tune our requirements and created the excellent Wikibase Export extension for non-technical users. It's very clean, clear and user-friendly.
From Our Blogs
Best MediaWiki Extensions
With thousands of extensions available, it can be tough to know which ones are most useful. We've compiled a list of the 15 best MediaWiki extensions.
Top Wikibase Extensions
Discover the top Wikibase extensions in our curated list. These 17 MediaWiki extensions provide enhanced search, data validation, media support, export, and more.
Wikibase Faceted Search Released
A new extension that adds faceted filtering to Wikibase search. Combine full-text and structured queries, filter by Statement values and Item types, and configure it all on-wiki.
Ready to build something great?
Explore MediaWiki Services
Get superior results from the best MediaWiki developers with a proven track record of creating MediaWiki extensions & integrations.
Make your wiki look great! Use a time-tested responsive MediaWiki theme, or have us create a custom MediaWiki skin for you.
Let us take care of your wiki. We are MediaWiki hosting experts and provide cloud hosting, dedicated hosting, and on-premise hosting.
Bring your wiki to the next level by leveraging our MediaWiki expertise. From strategic planning to wikitext, we have you covered.
Migrate your wiki with confidence. We move your MediaWiki to a new home, or we help you migrate from another system to MediaWiki.
Keep your MediaWiki up-to-date and secure. We offer MediaWiki maintenance services to keep your wiki running smoothly.