Ppx_tools provides tools for authors of ppx rewriters and other syntactic tools.

swhid_core is an OCaml library to work with Software Heritage persistent identifiers (swhids). This is the core library, for most use cases you should use the swhid library instead.

Cstruct is a library and syntax extension to make it easier to access C-like structures directly from OCaml. It supports both reading and writing to these structures, and they are accessed via the Bigarray module.

This package is a line-reading library for OCaml that aims to replace readline.

Library operating system that constructs unikernels for secure, high-performance network applications across a variety of cloud computing and mobile platforms. Code can be developed on a normal OS and then compiled into a fully-standalone, specialised unikernel.

Fpath is an OCaml module for handling file system paths with POSIX or Windows conventions. Fpath processes paths without accessing the file system and is independent from any system library.

SQLite3-OCaml is an OCaml library with bindings to the SQLite3 client API. Sqlite3 is a self-contained, serverless, zero-configuration, transactional SQL database engine with outstanding performance for many use cases. These bindings are written in a way that enables a friendly coexistence with the old (version 2) SQLite and its OCaml wrapper ocaml-sqlite.

Earley is a parser combinator library base on Earley's algorithm. It is intended to be used in conjunction with an OCaml syntax extension which allows the definition of parsers inside the language. There is also support for writing OCaml syntax extensions in a camlp4 style.

Uses the new result type defined in OCaml >= 4.03 while staying compatible with older version of OCaml should use the Result module defined in this library.

Dose3 is a framework made of several OCaml libraries for managing distribution packages and their dependencies. Though not tied to any particular distribution, dose3 constitutes a pool of libraries which enable analyzing packages coming from various distributions. Besides basic functionalities for querying and setting package properties, dose3 also implements algorithms for solving more complex problems such as monitoring package evolutions, correct and complete dependency resolution and repository-wide uninstallability checks.

Contains Async's core data structures, like Deferred. Async_kernel is portable, and so can be used in JavaScript using Async_js.

This package is a collection of ppx rewriters that generate hash functions from type exrpessions and definitions.

This package provides a deprecated logging component for ocaml lwt.

Merlin is an editor service that provides modern IDE features for OCaml. Emacs and Vim support is provided out-of-the-box. External contributors added support for Visual Studio Code, Sublime Text and Atom.

Biniou (pronounced "be new" is a binary data format designed for speed, safety, ease of use and backward compatibility as protocols evolve. Biniou is vastly equivalent to JSON in terms of functionality but allows implementations several times faster (4 times faster than yojson), with 25-35% space savings.

Lwt provides typed, composable cooperative threads. These make it easy to run normally-blocking I/O operations concurrently in a single process. Also, in many cases, Lwt threads can interact without the need for locks or other synchronization primitives.

A ppx rewriter that inlines reverse application operators |> and |!.

React is an OCaml module for functional reactive programming (FRP). It provides support to program with time varying values: declarative events and signals. React doesn't define any primitive event or signal, it lets the client chooses the concrete timeline.

This package provides a way to write bitstrings and matching over bitsrings in Erlang style as primitives to the language.

Ctypes is a library for binding to C libraries using pure OCaml. The primary aim is to make writing C extensions as straightforward as possible. The core of ctypes is a set of combinators for describing the structure of C types -- numeric types, arrays, pointers, structs, unions and functions. You can use these combinators to describe the types of the functions that you want to call, then bind directly to those functions -- all without writing or generating any C!

Xml-Light provides functions to parse an XML document into an OCaml data structure, work with it, and print it back to an XML document. It also supports DTD parsing and checking, and is entirely written in OCaml, hence it does not require additional C libraries.

These libraries provides access to low-level compiler interfaces and the standard higher-level merlin protocol.

Ppx_deriving provides common infrastructure for generating code based on type definitions, and a set of useful plugins for common tasks.

Timezone handles parsing timezone data and create Timezone.t that can later be used to manipulate time in core_kernel or core.