Timeline of free and open-source software
This article presents a timeline of events related to popular free/open-source software. For a narrative explaining the overall development, see the related history of free and open-source software.
The Achievements column documents achievements a project attained at some point in time.
2000s
By the 2000s the number of open source software packages in wide use was so large that it would be infeasible to make a definitive list.2020s
| Date | Project | Event | Achievements |
| 2020, June | Linux | The Linux operating systems market share breaks the 3% marker for the first time in June 2020, reaching 3.57% in July 2020. |