ReasonConf 2019 Logo

The ReasonML conference for web developers & OCaml enthusiasts

Vienna, Austria

Reason Conf US is happening!

We're proud to announce Reason Conf US taking place in Chicago, IL on October 8th. Keynote by Jordan Walke. Buy tickets before they sell out!

ReasonConf US Announcement

On the Road to Production

Last year, we have been eagerly onboarding newcomers to the language and we will continue to do so. This year, the conference is all about shipping products and tools built with Reason & OCaml.

  1. Workshops & Knowledge Transfer

    The first day is dedicated to different workshops for different skill levels and topics. There are beginner friendly workshops about Reason and ReasonReact as well as more advanced workshops about GraphQL and OCaml. Our workshop leaders are more experienced Reason / OCaml users and Reason core team members. Check the ticket section for details.

    Workshops & Knowledge Transfer Photo
  2. Conference Day

    The conference day will be a single-stage setup with a variety of talks about Reason & OCaml related R&D, case studies and the community.

    Conference Day Photo
  3. Open Stage & Reason Dojo Day

    The last day will be split in an Open Stage session with recorded lightning talks in the morning and a Reason Dojo with experienced Dojo Leaders in the afternoon.

    Open Mic & Reason Dojo Day Photo


We offer free tickets for underrepresented groups. Apply for a free ticket.

Sponsors & Partners

Do you want to help us make a better conference? Become a sponsor!

  • ahrefs
    Gold Sponsor
  • janestreet
    Gold Sponsor
  • Imandra
    Food & Drinks
  • g2i
  • Nomadic Labs

    Impressions from 2018

    Jérémie Dimino avatar image
    Jérémie Dimino@dimenix

    It was really nice to meet people from the @reasonml community at the

    #ReasonConf and see how this new language is making the things we love about OCaml accessible to new communities. Thanks to the organizers and congratulations to the authors and maintainers of Reason!

    Keira avatar image

    To the core contributors who came and tirelessly listened, helped, informed, debated, taught, demonstrated, and were generally awesome - thank you.


    Ben avatar image

    Truly amazing day in Vienna at #ReasonConf

    I’ve never seen such a nice community :) @reasonml

    Johann Sonntagbauer avatar image
    Johann Sonntagbauer@johann_sonntag

    #ReasonConf was an inspiring experience and not a conference in traditional sense. No advertising, simply telling the truth, sharing stories and trying to work for the best outcome possible. I am so thankfull to have wittnessed this amazing experience thx!

    Sophie G avatar image
    Sophie G@rarity2017

    Thank you #ReasonConf organisers for the sightseeing tour! Was a great conference from start to finish. Thank you, Vienna!

    Andrey Popp avatar image
    Andrey Popp@andreypopp

    Got back from @reasonconf, this was the best conf I’ve ever attended: both from the fun and usefulness PoV. Thank you @ryyppy @nikgraf and @okonetchnikov for organising it. The @reasonml community is so nice, been very happy to meet in person with a lot of people from there 😀