Open Source

WASM I/O 2026

This edition has ended

WASM I/O 2026 ran Mar 19–20, 2026 at AXA Convention Center in Barcelona, Spain. It is an Open Source conference. ConferenceGrid lists 37 speakers and 29 sessions. Dates for the next edition are not announced yet.

Lineup updated Jun 16, 2026 · dates verified May 6, 2026

WASM I/O is a two-day single-track conference focused on the WebAssembly ecosystem, bringing together the global WebAssembly community for deep technical sessions, discussion, and networking. The 2026 edition will be held in Barcelona, providing an opportunity to collaborate, share knowledge, and shape the future of WebAssembly.

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37Speakers
0Sponsors
29Sessions
26Companies · in total

Speakers

Programmed at WASM, in alphabetical order.

Andrea Peruffo
IBM
Andrew Steurer
Bailey Hayes
Cosmonic
Barış Güler
Zoi
Bruce Gain
ReveCom
Corey Ryan
fastertools
Dan Phillips
Doru Blânzeanu
Microsoft
Edoardo Vacchi
Red Hat
Erik Rose
Fastly
Fedor Smirnov
Peeriot
Fellyph Cintra
Automattic
Guy Bedford
Cloudflare
Ian McDonald
Extend
Kevin Burns
Pantopic
Kit Chan
Yahoo
Kohei Tokunaga
NTT, Inc
Lucy Menon
Microsoft
Luke Wagner
Fastly
Marcin Ziółkowski
Orange Innovation Poland
Max Desiatov
Apple
Michael Yuan
Second State

Agenda

Selected from 29 sessions.

  • 19th March, 09:00 - 09:15

    Opening

    Track 1 (Auditorium)
  • 19th March, 09:15 - 09:45

    Towards a Component Model 1.0

    Track 1 (Auditorium)
  • 19th March, 09:50 - 10:20

    Beyond Performance: 5 Years of Improving JavaScript on WebAssembly

    Track 1 (Auditorium)
  • 19th March, 10:25 - 10:55

    The Exacting Details of "Hello, World!" in Wasmtime

    Track 1 (Auditorium)
  • 19th March, 11:25 - 11:55

    Hands-On with Hyperlight and Wasm [Workshop]

    Track 2 (Workshops)
  • 19th March, 11:25 - 11:55

    Running Python Greenlets fully in WebAssembly thanks to JSPI

    Track 1 (Auditorium)
  • 19th March, 12:00 - 12:30

    Rust & JavaScript Interoperability @ Cloudflare

    Track 1 (Auditorium)
  • 19th March, 12:35 - 13:05

    Co-operative Multithreading and the Component Model

    Track 1 (Auditorium)
  • 19th March, 14:05 - 14:35

    Building Browser-Native AI Runtimes: A Hands-On Workshop with WebLLM, WASM & WebWorkers [Workshop]

    Track 2 (Workshops)

Quick answers

When is WASM I/O 2026?
WASM I/O 2026 ran Mar 19–20, 2026 at AXA Convention Center in Barcelona, Spain.
Where is WASM I/O 2026 held?
WASM I/O 2026 was held at AXA Convention Center in Barcelona, Spain.
Who is speaking at WASM I/O 2026?
ConferenceGrid lists 37 speakers, including Andrea Peruffo (IBM), Andrew Steurer and Bailey Hayes (Cosmonic).
Company intelligence

An audience of 26 companies, parsed from the program.

26 companies in attendance.

The numbers below are derived from the speakers, sponsors, and exhibitors on this page, cross-referenced into one ledger. They are the only thing here that 10times.com cannot tell you.

Who's in the room
0All threespeak · spons · exh
0Sponsoringsponsor only
26Speakingspeaker only
Speakers by seniority
  • Other roles37100%

Of 37 speakers · classified by free-text title

Most-represented companies
#CompanyRolesSpeakers
1Microsoft4
2Fastly3
3F52
4Mimic2
5Akamai1
6Apple1
7Automattic1
8Cloudflare1
9Cosmonic1
10Extend1
11fastertools1
12Goodnotes1
13IBM1
14Igalia1
Sponsors by tier

Tiers were not disclosed for this event.