Top OCaml GitHub Repositories (2026) · Open Source Projects

MirageOS is a library operating system that constructs unikernels

Mina is a cryptocurrency protocol with a constant size blockchain, improving scaling while maintaining decentralization and security.

Source code of the Coccinelle project (mirror of the main Coccinelle repository located at Inria)

Modern scientific computing for OCaml

Declarative definition of command line interfaces for OCaml

Piqi – universal schema language: JSON, XML, Protocol Buffers data validation and conversion

A filesystem interface to git repositories

Light library to deal with RPCs in OCaml

An interactive theorem prover based on lambda-tree syntax

Phylogenetic placement and downstream analysis

Support library for OCaml programs running as Erlang ports

ocamltter is a Twitter client in OCaml. This client run on the OCaml toplevel interpreter. Then each operation on the client is just a OCaml function and you can develop a twitter program interactively.

Phylogenetic analysis of multi-species genome sequence alignments to identify conserved protein-coding regions

A static analyzer for Java, C, C++, and Objective-C

This is OCaml code which uses the libraries menhir (http://cristal.inria.fr/~fpottier/menhir/) and the Batteries (http://batteries.forge.ocamlcore.org). After it is compiled, it can be used to parse a file which contains arithmetic expressions.

Aurochs is a parser generator that uses the parse expression grammar (PEG) or "packrat" approach. It takes a grammar in a BNF-like notation (a .peg file) and produces bytecode (a .nog file) for a stack automaton. This bytecode is later interpreted on the input to parse using a C library. Bindings are given for Ocaml, Java and Exascript.

literate programming meets unison

JSure is a fast, standalone Javascript checker.

BDD for OCaml

logic file system