OCamlPro helps its clients use OCaml and Rust in their business applications, thanks to a team of experts in programming languages, software development and algorithms. OCamlPro created opam, and maintains the Flambda optimizing compilers.

Fasoo uses OCaml to develop a static analysis tool.

Psellos is a small group of computer scientists who became intrigued by the idea of coding iOS apps in OCaml.

Shiro Games is developing games using Haxe, a language built with a compiler written in OCaml.

Dassault Systèmes, the 3DEXPERIENCE Company, provides businesses and people with virtual universes to imagine sustainable innovations.

Coherent Graphics is a developer of both server tools and desktop software for the processing of PDF documents

Zeo is a digital marketing company focused on helping companies to do better in SEO.

The Computational Sciences Department at the AMNH has been using OCaml for almost a decade in their software package POY for phylogenetic inference

Mr. Number started as a Silicon Valley startup and developed the Mr. Number app for call blocking, later acquired by WhitePages.

Galois has developed a domain specific declarative language for cryptographic algorithms.

TrustInSoft is a company that changes the rules in cybersecurity. TrustInSoft is the publisher of the TrustInSoft Analyzer tool.

Digirati dba Hostnet is a web hosting company.

Bloomberg, the global business and financial information and news leader, gives influential decision makers a critical edge by connecting them to a dynamic network of information, people and ideas

Multi-asset platform to support investment decision-making and innovation.

MEDIT develops SuMo, an advanced bioinformatic system, for the analysis of protein 3D structures and the identification of drug-design targets.

Tarides builds and maintains open-source infrastructure tools in OCaml like MirageOS, Irmin, and OCaml developer tools.

CEA is a French state company, member of the OCaml Consortium.

Arena helps organizations hire the right people.

Docker provides an integrated technology suite that enables development and IT operations teams to build, ship, and run distributed applications anywhere

Nomadic Labs houses a team focused on Research and Development. Our core competencies are in programming language theory and practice, distributed systems, and formal verification.

Cryptosense creates security analysis software with a particular focus on cryptographic systems

Facebook has built a number of major development tools using OCaml

Matrix Lead provides professionals and companies with leading technologies and solutions for spreadsheets.

Jane Street is a quantitative trading firm that operates around the clock and around the globe

Microsoft Corporation is an American multinational technology corporation which produces computer software, consumer electronics, personal computers, and related services.

Solvuu's software allows users to store big and small data sets, share the data with collaborators, execute computationally intensive algorithms and workflows, and visualize results.

Imandra is the world leader in cloud-scale automated reasoning.

Incubaid has developed Arakoon, a distributed key-value store that guarantees consistency above anything else.

The Hammer Lab at Mount Sinai develops and uses Ketrew for managing complex bioinformatics workflows.

Be Sport's mission is to enhance the value that sport brings to our lives with appropriate use of digital and social media innovations

Sakhalin develops marine charting apps for Apple iPads and iPhones.

O(1) Labs is a global and remote company that incubated the Mina Protocol. Our team operates on the cutting edge of Web3 and zero-knowledge-proofs.

Prudent Consulting offers IT solutions to large and mid-sized organizations by combining industry experience and technology expertise to help our customers achieve business goals with speed, agility, and great impact.

LexiFi is an innovative provider of software applications and infrastructure technology for the capital markets industry.

ForAllSecure's mission is to test the world's software and provide actionable information to our customers.

Esterel Technologies is a leading provider of critical systems and software development solutions for the aerospace, defense, rail transportation, nuclear, and industrial and automotive domains

XenServer is a world-class server virtualization system.

Functori is a R&D company created by experienced engineers in programming languages (particularly OCaml), formal verification (automated reasoning, model checking, ...), and blockchain technology (core, smart contracts and applications development).

Dernier Cri is a French company based in Lille and Paris using functional programming to develop web and mobile applications.

Kernelyze has developed a novel approximation of two-variable functions that achieves the smallest possible worst-case error among all rank-n approximations.

Wolfram MathCore uses OCaml to implement its SystemModeler kernel.

The ANSSI core missions are: to detect and react to cyber attacks, to prevent threats, to provide advice and support to governmental entities and operators of critical infrastructure, and to keep companies and the general public informed about information security threats

4Sigma is an italian firm making web applications and solutions for the industrial automation sector.

r2c is a VC-funded security company headquartered in San Francisco and distributed worldwide

Specialises in functional programming software development, consultation, and training.

Ahrefs crawls the entire internet constantly to collect, process, and store data to build an all-in-one SEO toolkit.

Narrow Gate Logic is a company using the OCaml language in business and non-business applications.

Issuu is a digital publishing platform delivering exceptional reading experiences of magazines, catalogues, and newspapers

Cacaoweb is developing an application platform of a new kind. It runs on top of our peer-to-peer network, which happens to be one of the largest in the world

Kong makes it easy to distribute, monetize, manage and consume cloud APIs.

MyLife has developed a powerful people search tool that will empower those in need to find anyone, regardless of years past and the life that was built in between.