By field

Open Source conferences 2026 and 2027

125 events catalogued in Open Source, 44 forthcoming, 81 prior. Below, the strongest of each month for the next year. Click any entry for the full editorial profile: speakers, sponsors, sessions, cross-event company graph.

Updated October 15, 2026 from each event's own site

Key takeaways

  • 44 upcoming Open Source conferences. The next is Joomla World Conference 2026, October 16, 2026 in Potsdam, DE.
  • Largest program: SFSCON 2026, with 90 speakers.
  • Most sponsors: SCALE 24x, with 82.
  • Next call for speakers to close: Infonoms 2026, on October 15.

Calendar feed

Get Open Source conferences in your calendar

44 upcoming conferences · updates automatically. Every conference and CFP deadline, straight to Google, Apple, or Outlook, new dates appear on their own.

Google CalendarApple CalendarOutlook

The best Open Source conferences in 2026 and 2027

Data as of October 15, 2026

10 picks from 44 upcoming Open Source conferences.

How we ranked them Full methodology

1Speakers

Counted from the event's own site. Weighted twice as heavily as sponsors.

2Sponsors

Counted from the event's own sponsor page.

3Upcoming only

Events that have not started yet. Past editions are listed further down.

4No paid placement

No event pays to appear or to move up.

At a glance
#ConferenceDatesWhereSpeakersSponsorsBest for
1SFSCON 2026November 13, 2026Bolzano, IT9018A broad program of sessions
2SeaGL 2026October 23, 2026Seattle, US5555Seeing the vendor landscape
3Joomla World Conference 2026October 16, 2026Potsdam, DE5939Seeing the vendor landscape
4FOSSASIA PGDay 2027March 9, 2027Bangkok, TH650A broad program of sessions
5SCALE 24xApril 1, 2027Pasadena, US2082Seeing the vendor landscape
6Capitole du Libre 2026November 14, 2026Toulouse, FR4329A deep speaker lineup
7Code BEAM Europe 2026October 21, 2026online4312Attending without travel
8Open Source Experience 2026December 9, 2026Paris, FR3514Walking a large expo floor
9FOSS-LÄND x OpenChain 2027March 22, 2027Stuttgart, DE080A focused, smaller program
10Blender Conference 2026October 23, 2026Amsterdam, NL390A deep speaker lineup
  1. 1
    SFSCON 2026November 13, 2026

    Bolzano, IT·90 voices, 18 sponsors

    Best forA broad program of sessions

    90 speakers. Sponsors include Bosch, Checkmk and Linaro.

    Track
  2. 2
    SeaGL 2026October 23, 2026

    Seattle, US·55 voices, 55 sponsors

    Best forSeeing the vendor landscape

    55 speakers, 23% at VP level or above. Sponsors include Amazon AWS, twilio and Indeed.

    Track
  3. 3

    Potsdam, DE·59 voices, 39 sponsors

    Best forSeeing the vendor landscape

    59 speakers, 33% at VP level or above. Sponsors include JoomShaper, YOOtheme and mittwald.

    Track
  4. 4
    FOSSASIA PGDay 2027March 9, 2027

    Bangkok, TH·65 voices

    Best forA broad program of sessions

    65 speakers, 26% at VP level or above.

    Track
  5. 5
    SCALE 24xApril 1, 2027

    Pasadena, US·20 voices, 82 sponsors

    Best forSeeing the vendor landscape

    20 speakers, 13% at VP level or above. Sponsors include Google, CNCF and Red Hat. 10 exhibitors.

    Track
  6. 6
    Capitole du Libre 2026November 14, 2026

    Toulouse, FR·43 voices, 29 sponsors

    Best forA deep speaker lineup

    43 speakers. Sponsors include Thales, Airbus and Smile.

    Track
  7. 7
    Code BEAM Europe 2026October 21, 2026

    Virtual·43 voices, 12 sponsors

    Best forAttending without travel

    43 speakers, 24% at VP level or above. Sponsors include Erlang Solutions, AppSignal and Ahrefs.

    Track
  8. 8

    Paris, FR·35 voices, 14 sponsors

    Best forWalking a large expo floor

    35 speakers, 24% at VP level or above. Sponsors include Orange, Factor FX and GLPI. 44 exhibitors.

    Track
  9. 9

    Stuttgart, DE·80 sponsors

    Best forA focused, smaller program

    Sponsors include Deloitte, Sonatype and WIPRO Limited.

    Track
  10. 10
    Blender Conference 2026October 23, 2026

    Amsterdam, NL·39 voices

    Best forA deep speaker lineup

    39 speakers, 17% at VP level or above.

    Track

Keep track of Open Source conferences

  • Track any conference on this page in one click
  • Reminders before each one starts and before calls for speakers close
  • See which companies you sell to are sponsoring or speaking

Free. We email a one-time sign-in link, no password.

Forthcoming

On the horizon, by month

October 20269 events

November 202610 events

December 20262 events

January 20272 events

February 20273 events

March 20273 events

April 20275 events

Also with Open Source on the agenda

73 upcoming events in other fields that cover it

Prior editions

From the catalogue archives

Questions

About Open Source conferences

What are the best Open Source conferences in 2026?
Ranked by how many speakers and sponsors each event lists on its own site, the top three are SFSCON 2026 (November 13, 2026, Bolzano, IT), SeaGL 2026 (October 23, 2026, Seattle, US) and Joomla World Conference 2026 (October 16, 2026, Potsdam, DE). The ranking above covers 10 events out of 44 upcoming Open Source conferences we track.
Which Open Source conference has the most sponsors?
SCALE 24x lists 82 sponsors, the most of any upcoming Open Source conference we track. It runs April 1, 2027 in Pasadena, US.
When is the next Open Source conference?
Joomla World Conference 2026 is next, on October 16, 2026 in Potsdam, DE.
Which Open Source conferences are accepting speakers?
Calls for speakers are open at Infonoms 2026 (until October 15), PlanetNix 2027 (until December 23), SCALE 24x (until November 2) and KEYCLOAK DevDay 2027 (until October 24).
How is this list ranked?
By verified program depth: the number of speakers and sponsors each conference publishes on its own website, which we re-check against the source. No event pays to appear in this ranking.