Events
Find upcoming events related to open source. Sorted by next date, with the editions that already happened greyed. Dates checked on each event’s site in October 2026; confirm them before you book anything.
| Event | When | Where | Free? | Focus |
|---|---|---|---|---|
| Hacktoberfest | 1–31 October 2026 | Online and 400+ local Fests | Yes | Beginner-friendly open source participation. In 2026, pull requests no longer count toward the rewards. |
| Open Source Summit Europe | 7–9 October 2026 | Prague, Czechia | See the site | Vendor-neutral conference for open source developers, run by the Linux Foundation. |
| All Things Open | 19–20 October 2026 | Raleigh, North Carolina, USA | See the site | Open source, open tech and the community around it. |
| GitHub Universe | 28–29 October 2026 | San Francisco, USA, and online | See the site | GitHub's own conference. Virtual attendance is free. |
| 24 Pull Requests (program) | 1–24 December 2026 | Online | Yes | One contribution a day, or fewer, during the 24 days before Christmas. |
| Open Source Summit Japan | 7–9 December 2026 | Tokyo, Japan | See the site | Linux Foundation conference for the Japanese open source community. |
| Open Source Experience | 9–10 December 2026 | Paris, France | Yes | European trade show on sovereignty, resilience and open source in business. Visitor badges are free. |
| FOSDEM | 30–31 January 2027 | Brussels, Belgium | Yes | Free and Open Source Software Developers' European Meeting. The calls for devrooms and stands for 2027 are closed. |
| State of Open Con | 9–10 February 2027 | London, UK | See the site | UK open source conference. The 2026 edition was split across several cities. |
| Open Source Summit North America | 17–19 May 2027 | Vancouver, Canada | See the site | Vendor-neutral conference for open source developers, run by the Linux Foundation. |
| Open Source Summit Europe 2027 | 20–22 September 2027 | Glasgow, Scotland | See the site | The 2027 edition of the Linux Foundation's European summit. |
| FOSS Backstage | March, dates to be announced | Berlin, Germany | See the site | Open source management: governance, community, compliance and funding. The 2027 dates are not announced. |
| Google Summer of Code (program) | Organizations in January, contributor proposals in March, dates to be announced | Remote | See the site | Paid mentored projects with open source organizations. The 2027 timeline is not published. |
| Outreachy (program) | Applications in February and August, dates to be announced | Remote | See the site | Paid three-month remote internships in open source. The December 2026 round's final application deadline is 2 November 2026. |
Everything else#
Not listed above? foss.events has the rest. For Hacktoberfest, read what it is and how to take part.
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