Wikipedia is not available for Windows but there are some alternatives that runs on Windows with similar functionality. The best Windows alternative is Encyclopædia Britannica, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to Wikipedia and seven of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Wikipedia are Kiwix, XOWA, Oppia and kiwix-serve.
The Encyclopædia Britannica is a general English-language encyclopaedia published by Encyclopædia Britannica, Inc., a privately-held company. The articles in the Britannica are aimed at educated adult readers, and written by a staff of about 100 full-time editors and...
Provides offline access to Wikipedia and HTML content via ZIM format, featuring a full-text search engine, multi-language interface, export capabilities, bookmarks, content manager, and support for Windows, macOS, Linux, Android, USB drives, and local servers.
XOWA is the free, open-source application that lets you download Wikipedia to your computer. Access all of Wikipedia offline -- without an internet connection!
Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.
Kiwix-serve is a ZIM compatible Web server. With its help you can deliver ZIM file content over your network. Designed to serve Wikipedia zim files over LAN in an offline setting.
Okawix lets you download the whole content of Wikipedia, with or without images, so that you can browse it offline:
WikiTaxi It's a portable application that delivers the Wikipedia of your choice to wherever you go.
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Reliable source but not complete.