| Clue | Source | Date |
|---|---|---|
| Like Linux and MySQL | Wall Street Journal | 29 Nov 2025 |
| Publicly available, as programming code | ||
| Like software that can be freely modified | Universal | 24 Dec 2022 |
| Like a code anyone can use | New York Times | 05 Oct 2018 |
| Like a code anyone can use | ||
| Freely editable | Newsday | 04 Mar 2017 |
| Like some software | LA Times Daily | 06 Jun 2015 |
| Like some software | ||
| *Like software that can be freely used and altered | ||
| *Like Linux | ||
| Like some freely available software | ||
| Like some software |