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OCamlPro harnesses state-of-the-art languages like #OCaml and #Rust to help design & implement safe & powerful software #Formal Methods OCamlPro is a French software company born in 2011 and located in Paris, Lyon, Rennes and Toulouse. We are dedicated to improving the quality of software, through the use of formal methods. For that purpose, OCamlPro promotes the use of state-of-the-art programming languages like OCaml and Rust, matured for decades in Public Research labs in the world. We harness our Programming Languages expertise to help audit and optimize (or migrate) core infrastructures. And we develop safety-oriented verification and testing tools, such as the Alt-Ergo theorem prover, the OWI (OCaml Wasm Interpreter) Toolchain, the Autocouv Seacoral automated testing framework. Our mains focus are: * Prototyping (OCaml / Rust), Dev tooling and Language audit and design (DSLs, COBOL migration): we help optimize critical infrastructure core pieces and we design ad hoc specific languages (DSLs) for business lines like cinema revenues share computation or tax calculation, or combinatorial optimization in logistics. We also offer open source tools to developers. And we provide business-level and long-term support to the OCaml language to make it more suitable for use in a wider range of professional environments. * Formal methods: OCamlPro is involved in collaborative projects with academic and industrial partners to develop tools for software verification, such as the Alt-Ergo SMT Solver (from LRI), the Autocouv Project for automated testing, OWI a post-JavaScript OCaml Wasm Interpreter toolchain. * Blockchain (now essentially training): from 2014, design and development of the Tezos prototype and ICO on Bitcoin and Ethereum, as well as several related projects - a block explorer and a higher-level programming language for smart contracts, with initial tooling for formal verification using the Why3 (INRIA) and Alt-Ergo tools.

OCamlPro Questions

The OCamlPro annual revenue was $11 million in 2026.

Fabrice le Fessant is the Founder and Président of OCamlPro.

20 people are employed at OCamlPro.

OCamlPro is based in Paris, Ile-de-France.

The NAICS codes for OCamlPro are [54, 541, 541511, 5415, 54151].

The SIC codes for OCamlPro are [73, 737].

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