ENCARTA
| Date | Clue |
|---|---|
| 2020-02-23 | Early online encyclopedia |
| 2016-11-16 | Microsoft's defunct digital encyclopedia |
| 2016-02-07 | Bygone online reference |
| 2015-02-18 | Onetime Microsoft encyclopedia |
| 2013-07-12 | Wikipedia precursor |
| 2010-10-18 | Former Web reference from Microsoft |
| 2009-08-07 | Something once bundled with Microsoft products |
| 2008-08-15 | Wikipedia alternative |