Encarta

Microsoft Encarta was a digital multimedia encyclopedia published by Microsoft Corporation from 1993 to 2009. In 2008, the complete English version, Encarta Premium, consisted of more than 62,000 articles, numerous photos and illustrations, music clips, videos, interactive contents, timelines, maps & atlas and homework tools. It was available on the World Wide Web by yearly subscription or by purchase on DVD or multiple CDs. Many articles could also be viewed online free of charge, a service supported by advertisements.