| Clue | Source | Date |
|---|---|---|
| *Computer program that blurs out military installations | New York Times | 24 Aug 2021 |
| Atlas alternative | Wall Street Journal | 29 Feb 2020 |
| Atlas alternative | Universal | 28 Nov 2018 |
| Computer program employing images from aerial photography | The Washington Post Sunday | 09 Sep 2018 |
| Atlas alternative | ||
| *Popular app that can view any of the places named at the ends of the answers to the starred clues | New York Times | 17 Apr 2016 |
| Reference program launched in 2005 |