The OCaml Platform combines the OCaml compiler toolchain with a coherent set of tools for build, documentation, testing and IDE integration. The project is a collaborative effort across the OCaml community, tied together by the OCaml Labs group in Cambridge, and OCamlPro in Paris. The requirements of the Platform are guided by large industrial users such as Jane Street, Citrix, Docker, Facebook, Microsoft and LexiFi, as well as accrued feedback from the opam project.

Following the demonstration of the platform tools at the 2018 workshop, we have a significant number of updates to share this year as the constituent tools mature. We will firstly present an overview of the major releases and features that happened through 2019, covering opam, dune, odoc, ocamlformat and merlin. We will also highlight the interoperability growing between the tools, and also (time permitting) present a roundup of adoption of the Platform by major open source projects and industrial users.