OCaml Users and Developers Meeting 2020

It is my pleasure to invite submissions to the OCaml Users and
Developers Workshop 2020, which is again co-located with ICFP and will
be held on Friday 28th August 2020 in Jersey City, NJ, USA.

The OCaml Users and Developers Workshop brings together the
OCaml community, including users of OCaml in industry, academia,
hobbyists and the free software community. Previous editions
have been co-located with ICFP since 2012 in Copenhagen, Boston,
Gothenburg, Nara, Oxford, St Louis and last year in Berlin, following OCaml
Meetings in Paris in 2010 and 2011.

Important Links

Important Dates

  • Talk proposal submission deadline: May 8th, 2020, AoE
  • Author Notification: June 26th, 2020
  • OCaml Workshop: August 28th, 2020


Presentations and discussions focus on the OCaml programming language
and its community. We aim to solicit talks on all aspects related to
improving the use or development of the language and its programming
environment, including, for example (but not limited to):

  • compiler developments, new backends, runtime and architectures

  • practical type system improvements, such as GADTs, first-class
    modules, generic programming, or dependent types

  • new library or application releases, and their design rationales

  • tools and infrastructure services, and their enhancements

  • prominent industrial or experimental uses of OCaml, or deployments
    in unusual situations.


The workshop is an informal meeting with no formal proceedings. The
presentation material will be available online from the workshop
homepage. The presentations may be recorded and made available at a
later date.

The main presentation format is a workshop talk, traditionally
around 20 minutes in length, plus question time, but we also
have a poster session during the workshop – this allows to
present more diverse work, and gives time for discussion. The
program committee will decide which presentations should be
delivered as posters or talks.


To submit a presentation, please register a description of the
talk (about 2 pages long) at


providing a clear statement of what will be provided by the
presentation: the problems that are addressed, the solutions or
methods that are proposed.

LaTeX-produced PDFs are a common and welcome submission
format. For accessibility purposes, we ask PDF submitters to
also provide the sources of their submission in a textual
format, such as .tex sources. Reviewers may read either the
submitted PDF or the text version.

ML family workshop

The ML family workshop, held on the previous day, deals with
general issues of the ML-style programming and type systems,
focuses on more research-oriented work that is less specific to
a language in particular. There is an overlap between the two
workshops, and we have occasionally transferred presentations from one
to the other in the past. Authors who feel their submission fits both
workshops are encouraged to mention it at submission time and/or
contact the Program Chairs.

Program Committee

Ivan Gotovchits, CMU, USA
Florian Angeletti, INRIA, France
Chris Casinghino, Draper Laboratory, USA
Catherine Gasnier, Facebook, USA
Rudi Grinberg, OCaml Labs, UK
Oleg Kiselyov, Tohoku University, Japan
Andreas Rossberg, Dfinity Stiftung, Germany
Marcello Seri, University of Groningen, Netherlands
Edwin Torok, Citrix, UK
Leo White, Jane Street, USA
Greta Yorsh, Jane Street, USA
Sarah Zennou, Airbus, France

COVID-19 Notice

While ICFP-20 is still scheduled to be held as planned, chances are high that it will be turned into a virtual conference. Which means a wider audience and reduced (hopefully) fees. We will keep you posted.

Questions and contact

Please send any questions to the chair:
Ivan Gotovchits (ivg@ieee.org)


Due to the multiple requests and since ICFP will be now officially held online with a significantly reduced fee, we decided to extend the submission deadline till the end of this month. We are hoping to attract a larger and more diverse audience this year, given that the new format is more accessible both travel-wise and financially.

Please, share the news widely!

Important Dates (updated)

  • Talk proposal submission deadline: May 29th, 2020, AoE
  • Author Notification: July 17th, 2020
  • OCaml Workshop: August 28th, 2020

Meaning both the speakers and audiences will be sitting on their comfortable sofa, video conferencing? :sunglasses:


Virtually yes!1

1: sofas are provided at owner’s expense, with no warranty.