OCaml's powerful compile-time guarantees and high performance empower companies to provide reliable and speedy services and products. Learn more about how OCaml is used in the industry: …

Getting started with the OCaml programming language. Read the official tutorials, exercices, and language manual.

OCaml was written in 1996 by Xavier Leroy, Jérôme Vouillon, Damien Doligez, and Didier Rémy at INRIA in France. It was inspired by a long line of research into ML, starting in the 1960s, and …

Hop on the OCaml sightseeing bus. This absolute beginner tutorial will drive you through the marvels and wonders of OCaml. We'll have a look at the most commonly used language features.

Once you've completed this tutorial, you should be able to create, compile, and execute an OCaml project using Dune, OCaml's build system. You will be able to work with files, make private …

This page will help you install OCaml and the OCaml Platform Tools. | These instructions work on Windows, and Unix systems like Linux, and macOS.

The OCaml system release 5.4 October, 2025 This manual is also available in PDF, plain text, as a bundle of HTML files, and as a bundle of Emacs Info files.

The OCaml community has a lot of resources created and shared by its members. There are excellent tools and comprehensive documentation available for learning and much more.

Welcome to OCaml's in-browser playground! The OCaml Playground is made to make it easier for users, especially beginners, to get started with OCaml without worrying about installing anything.

The OCaml ecosystem provides ocaml-lsp-server, a Language Server Protocol (LSP) server that delivers editor features such as "jump to definition," "show type," autocompletion, and more.