What Our Users Say About Ocaml

Read our success stories to learn how OCaml helped our users achieve their goals.

Trusted by Industry Leaders

These companies and organizations rely on OCaml every day — along with thousands of other developers.

Microsoft

Docker

Jane Street

Bloomberg

Tezos

Ahrefs

Case Studies

Read how OCaml users are solving real-world problems and how OCaml was a key to their success.

Read full case study

Sensor Analytics and Automation Platform for Sustainable Agriculture

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Social Network for Sports and Athletes

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Modeling Language for Finance

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Peta-Byte Scale Web Crawler

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Large Scale Trading System

If you want to contribute to a new success story, check out the Contributing Guide on GitHub.

Testimonials

Read What Some Industry Users Say About OCaml.

Thanks to the OCaml team, obviously, without such a beautiful yet practical language, this project would not exist. The original type system was inherited from it with lots of modifications to fit with JS ecosystem better.

Maintainer, ReScript.

OCaml helps us to quickly adapt to changing market conditions and go from prototypes to production systems with less effort ... Billions of dollars of transactions flow through our systems every day, so getting it right matters.

CTO, Jane Street.

OCaml as the development environment acts as a very much trusted partner throughout the whole development process. As our requirements evolve, we change the implementation a lot, and this is where the language shines. Literally, I am not afraid to change others’ code when OCaml has my back!

Oleksiy Golovko

Backend Developer, Ahrefs.

Using OCaml as a programming language to write software has many benefits. For instance, it is able to describe the source code in an easy and understandable manner. The fear of refactoring in the source code can be eased as well. OCaml has a mature and very evolving ecosystem, which is a large, supportive and friendly community.

Xavier Van de Woestyne

Software engineer, Marigold.

Originally I was going to program twttr in Python, C, & Ocaml. But, I got @florian who was a core contributor to Ruby on Rails.

Founder, Twitter.

Other Industry Users of OCaml

With its strong security features and high performance, several companies rely on OCaml to keep
their data operating both safely and efficiently. On this page, you can get an overview of the
companies in the community and learn more about how they use OCaml.

If you want to contribute to add a new industrial user, check out the Contributing Guide on GitHub.

Industrial Resources

Here are some of the resources that may be helpful to you.

Getting Started

Install OCaml, setup your favorite text editor, and start your first project.

Standard Library

Read the standard library documentation and search its API for functions.

Books

What expert programmers and researchers are saying about OCaml, from the beginner level to the more advanced topics.