Conferences
Open Source conferences 2026 & 2027
October 2026 · 4
- Oct 20–23PGconf.EU
Valencia, Spain · Data, Engineering Leadership
- Oct 20–23The Matrix Conference
Malmö, Sweden
- Oct 23
- Oct 28–30Mozilla Festival
Barcelona, Spain · Data
November 2026 · 8
- Nov 2Open Source Analytics Conference
San Francisco, CA, U.S.A. + online · Data
- Nov 5–6bitcoin++ privacy edition
Seoul, South Korea
- Nov 9–10Gerrit User Summit
San Francisco, CA, U.S.A.
- Nov 12–13Ubuntu Summit
Online
- Nov 17–19Open Source Monitoring conference
Nürnberg, Germany
- Nov 18–19ASF Community Over Code / ChurConf
Sidney, Australia · Java
- Nov 18–19
- Nov 28FOSS for All Conference
Seoul, South Korea
December 2026 · 2
- Dec 1–3CFP open till Oct 31 →
- Dec 19–20
January 2027 · 1
- Jan 25–26FUN OCaml
Bangalore, India + online
March 2027 · 1
- Mar 2–4
April 2027 · 2
- Apr 1–4SCaLECFP open till Nov 1 →
Pasadena, CA, U.S.A.
- Apr 17CFP open till Oct 31 →
Going for the tools? New Open Source tools on DevHunt, voted by developers.
Built a dev tool?
Conferences are one of the few places where developers sit still and listen. Two ways in: submit a talk to an open call for papers (a practical talk about the problem your tool solves, not a pitch, gets accepted far more often), or sponsor a booth or a community event; smaller conferences sell sponsorships for a few hundred to a few thousand dollars, so email the organizers. Then give the audience somewhere to go after the talk.
Calls for papers closing soon · More places to promote your dev tool · Launch it on DevHunt
FAQ
What are the upcoming Open Source conferences in 2026?+
PGconf.EU (Oct 20–23, Valencia); The Matrix Conference (Oct 20–23, Malmö); Open Source Observability Day (Oct 23, online); Mozilla Festival (Oct 28–30, Barcelona); Open Source Analytics Conference (Nov 2, San Francisco, CA) and 13 more on this page.
Are there online Open Source conferences?+
Yes, 4 of the 18 have an online option. Use the Online filter to see them.
How can I speak at a Open Source conference?+
3 Open Source conferences have an open call for papers; the soonest deadline is Oct 31 (Build It Summit). The "CFP open" link on each row goes to the submission page.
Data: confs.tech (tech-conferences/conference-data, MIT license), a community-maintained open list; refreshed daily. Dates and CFP deadlines can change: check the official site. Missing a conference? Add it on confs.tech.