[Caml-list] [CFP] OCAML'25: The OCaml Users and Developers Workshop

[Caml-list] [CFP] OCAML'25: The OCaml Users and Developers Workshop

[Kiran (She/Her)]

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The OCaml Users and Developers Workshop: ACM SIGPLAN Workshop
October 17th, 2025 Singapore, Singapore, and also online.

Call for presentations: https://conf.researchr.org/home/icfp-splash-2025/ocaml-2025

Submission site: https://ocaml2025.hotcrp.com

Talk proposal submission deadline: Thursday July 3rd, 2025

(Please redistribute widely.)

The OCaml Users and Developers Workshop brings together the OCaml
community, including users of OCaml in industry, academia, hobbyists
and the free software community.

OCaml 2025 will be co-located with ICFP/SPLASH 2025, which will take place in
Singapore, Singapore. We aim to organize it as a hybrid event, so that people
can attend and even give talks remotely: talks will be streamed in
real-time, and virtual participants will be able to chat and ask
questions in writing.

### Scope

Presentations and discussions focus on the OCaml programming language as well as the OCaml ecosystem and its community. We aim to solicit talks on all aspects and perspectives related to improving the use or development of the language and its programming environment.

Different aspects include, for example (but are 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, tool 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.

Different perspectives include, for example (but are not limited to):

- scientific and/or research-oriented

- engineering and/or user-oriented

- social and/or community-oriented.

### Presentations

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 might 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.

### Submission

The submission website is available at: https://ocaml2025.hotcrp.com/

Conference website: https://conf.researchr.org/home/icfp-splash-2025/ocaml-2025

Please register a description of the talk (typically 2 pages long; it could also be less or more), a clear description 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.

[Last year's accepted presentations](https://icfp24.sigplan.org/home/ocaml-2024#event-overview) are available online.

#### Evaluation criteria

We will evaluate submissions according to the following aspects:

- relevance for the general OCaml community

- rigor and soundness

- novelty: new concepts/ideas, coverage of something unusual

- clear and understandable exposition of the content

- potential to deliver an engaging and informative (from a theoretical or practical point of view) presentation.

Not all submissions are expected to meet all criteria.

#### A note on affiliation quota

To guarantee coverage of diverse topics and perspectives, we will introduce a quota of maximum four accepted talks by speakers with the same affiliation, in line with previous workshops. Do not hesitate to submit your talk proposal in any case: quotas will be taken in account by the PC when deciding which submissions to accept. We know that authors may have many affiliations, or affiliations that are very broad (e.g. national research institutes). Judging from previous years we do not expect this to be a problem in most cases: the quota is intended to rule out extreme cases (e.g. having a disproportionate amount of accepted talks from colleagues of the same company).

### Attendance

We’re aiming to make the workshop hybrid, meaning that talks as well as participation can be either in-person or remote, and remote attendance will be free. To promote a good atmosphere, communication and engagement, we’ll prefer to have most talks in-person, but remote talks will be most welcome as well.

Thanks to support from the OCaml Software Foundation, registration fees will be covered for speakers in cases they can’t get it funded by other means (e.g. their employer).

### 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.

Best,
Kiran & Yasu,

Kiran (She/Her) ,
Researcher working on proof maintenance,
Website: kirancodes.me

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