We keep Wikimedia projects fast, reliable, and available to all.
From hosting Wikipedia to creating edit-checking artificial intelligence (AI), we design and build the open-source technology that powers Wikimedia projects. Community volunteers and Foundation technologists collaborate on MediaWiki, the platform that makes sharing free knowledge possible.
Hosting the world’s knowledge
Wikipedia is one of the top most-visited websites in the world, accessed by 1.7 billion unique devices every month. Our infrastructure keeps it online.
Making Wikipedia easier to use
Through technical and design improvements to Wikipedia’s desktop and more, we make the site easier to use and more welcoming for readers and contributors alike.
Assisting human collaboration with machine learning
Anyone can edit Wikipedia, and it can be challenging to maintain quality control. That is why we made ORES, an artificial intelligence service that automatically identifies potentially problematic content as soon as it appears, advising editors if changes are needed.
NASA’s internal wiki for collaboration and documentation is built on MediaWiki, just like Wikipedia. We create MediaWiki—open-source wiki software that is free and available for anyone.
Mentoring new developers
To help build a more diverse and inclusive technical community, the Wikimedia Foundation funds, supports, and mentors new developers and underrepresented groups in tech.
Growing a volunteer developer community
Over half of the commits made to our codebase are pushed by volunteers. We actively support a thriving volunteer technology community, with grants, events, and an open collaboration tool.
Help us unlock the world’s knowledge.
As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.Donate now
Wikipedia Gets a Fresh New Look: First Desktop Update in a Decade Puts Usability at the Forefront
The interface update, built in collaboration with Wikipedia volunteers worldwide, will make the site more welcoming, easier to use for everyone Update: On 4 May 2023, the desktop update was deployed to Spanish Wikipedia. The updated interface is now live on 95% of the 318 active language versions of Wikipedia for all desktop users. The….
New Wikipedia editor features make it easy for everyone to contribute
New features on Wikipedia are making it easy for everyone to edit Wikipedia, especially those contributing to the site for the first time. Every time you read a Wikipedia article, you are reading the work of a volunteer contributor. Nearly 300,000 people from around the world edit Wikipedia articles each month — they start new….
Dive deeper into Wikimedia projects
Originally created for use on Wikipedia, MediaWiki is free and open-source wiki software written in PHP.
The web service and API that provides machine learning as a service to flag bad edits and vandalism on Wikimedia projects.
Wikipedia at your fingertips on Android. Set your app to night reading mode or save articles to read offline.
Wikipedia at your fingertips on iOS. Set your app to night reading mode or save articles to read offline.
Our API provides straightforward access to Wikimedia content and data, in machine-readable formats.
Wikistats is a public dashboard featuring data about the reach and impact of Wikimedia projects.
For organizations that reuse Wikimedia content: Wikimedia Enterprise is a commercial product that meets a range of high volume content reuse needs, providing streamlined, on-demand access to Wikimedia APIs with standard Service Level Agreements.
Press Release - Wikipedia New Look
Mun May Tee-Galloway