Provides easy access to compressed files in ZIP, GZIP and JAR format. It provides functions for reading from and writing to compressed files in these formats.

The Core suite of libraries is an alternative to OCaml's standard library that was developed by Jane Street.

Uucp is an OCaml library providing efficient access to a selection of character properties of the Unicode character database.

This package simply repackages the OCaml compiler libraries so they don't expose everything at toplevel. For instance, Ast_helper is now Ocaml_common.Ast_helper.

Topkg is a packager for distributing OCaml software. It provides an API to describe the files a package installs in a given build configuration and to specify information about the package's distribution, creation and publication procedures.

Provides a single function to report the current time in nanoseconds since the start of the Unix epoch.

This library is a compatibility module for the Either module defined in OCaml 4.12.0.

Menhir is a parser generator. It turns high-level grammar specifications, decorated with semantic actions expressed in the OCaml programming language into parsers, again expressed in OCaml. It is based on Knuth’s LR(1) parser construction technique.

The graphics library provides a set of portable drawing primitives. Drawing takes place in a separate window that is created when Graphics.open_graph is called. This library used to be distributed with OCaml up to OCaml 4.08.

The ocaml-integers library provides a number of 8-, 16-, 32- and 64-bit signed and unsigned integer types, together with aliases such as long and size_t whose sizes depend on the host platform.

OCaml-uri is a library for parsing URI/URL in the RFC3986 format.

This library provides minimal support for Canonical S-expressions. Canonical S-expressions are a binary encoding of S-expressions that is super simple and well suited for communication between programs.

This library only provides a few helpers for simple applications. If you need more advanced support, such as parsing from more fancy input sources, you should consider copying the code of this library given how simple parsing S-expressions in canonical form is.

To avoid a dependency on a particular S-expression library, the only module of this library is parameterised by the type of S-expressions.

OCaml is written in OCaml. Its sources contain a pre-compiled bytecode version of ocamlc and ocamllex that are used to build the next version of the compiler. Camlboot implements a bootstrap for the OCaml compiler and provides a bootstrapped equivalent to these files.

It contains a compiler for a small subset of OCaml written in Guile Scheme, an interpreter for OCaml written in that subset and a manually-written lexer for OCaml. These elements eliminate the need for the binary bootstrap in OCaml and can effectively bootstrap OCaml 4.07.

This package produces a native ocamlc and a bytecode ocamllex.

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

This package is an OCaml library to parse and generate the YAML file format. It is intended to be interoperable with the Ezjsonm JSON handling library, if the simple common subset of Yaml is used. Anchors and other advanced Yaml features are not implemented in the JSON compatibility layer.

This package generates S-expression conversion functions from type definitions.

This module provides a set of tools to measure the running times of your functions and to easily compare the results. A statistical test is used to determine whether the results truly differ.

Spawn is a small library exposing only one functionality: spawning sub-process.

It has three main goals:

• provide missing features of Unix.create_process such as providing a working directory,

• provide better errors when a system call fails in the sub-process. For instance if a command is not found, you get a proper Unix.Unix_error exception,

• improve performances by using vfork when available. It is often claimed that nowadays fork is as fast as vfork, however in practice fork takes time proportional to the process memory while vfork is constant time. In application using a lot of memory, vfork can be thousands of times faster than fork.

Yojson is an optimized parsing and printing library for the JSON format. It addresses a few shortcomings of json-wheel including 2x speedup, polymorphic variants and optional syntax for tuples and variants. ydump is a pretty printing command-line program provided with the yojson package. The program atdgen can be used to derive OCaml-JSON serializers and deserializers from type definitions.

Piqilib is the common library used by the piqi command-line tool and piqi-ocaml.

Typerep is a library for runtime types.

Crowbar is a library for testing code, combining QuickCheck-style property-based testing and the magical bug-finding powers of afl-fuzz.

Camlidl is a stub code generator for Objective Caml. It generates stub code for interfacing Caml with C from an IDL description of the C functions.

This package provides RE-based regular expressions support for Mparser.