: After the encyclopedia was discontinued, the online dictionary remained accessible for free until 2011 . Discontinuation and Legacy

Microsoft Encarta was a digital multimedia encyclopedia published by Microsoft from . While it was primarily a paid commercial product, limited free versions existed through the Encarta Concise Encyclopedia online and ad-supported web articles before its eventual discontinuation. Today, the software is considered abandonware and is often found for free on archival sites like Internet Archive . Historical Overview and Development

: Famous for the MindMaze trivia game, where players explored a medieval castle by answering encyclopedia-based questions.

: Starting in 2000, a subset of the full encyclopedia was available for free online, supported by advertisements.

: Featured a virtual globe atlas (powered by MapPoint technology), dynamic timelines, and 360-degree virtual tours.

: An abridged online version offering around 16,000 articles for free to students and teachers.

Although mainly sold on CD-ROM and DVD, Microsoft experimented with free access models: