Ptime offers platform independent POSIX time support in pure OCaml. It provides a type to represent a well-defined range of POSIX timestamps with picosecond precision, conversion with date-time values, conversion with RFC 3339 timestamps and pretty printing to a human-readable, locale-independent representation.

Syntax extension that makes [failwiths] always include a position.

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.

Modules using ppx_module_timer have instrumentation to record their startup time.

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

Bindlib is a library allowing the manipulation of data structures with bound variables. It is particularly useful when writing ASTs for programming languages, but also for manipulating terms of the λ-calculus or quantified formulas.

Ppx_sexp_message aims to ease the creation of s-expressions in OCaml. This is mainly motivated by writing error and debugging messages, where one needs to construct a s-expression based on various element of the context such as function arguments.

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.

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 provides an effect-based IO API for multicore OCaml with fibers.

This ocaml library returns user XDG directories such as XDG_CONFIG_HOME, XDG_STATE_HOME.

Lexer generator for Unicode and OCaml.

OCamlify creates OCaml source code by including whole files into OCaml string or string list. The code generated can be compiled as a standard OCaml file. It allows embedding external resources as OCaml code.

This package expands @disable_unused_warnings into @warning "-20-26-32-33-34-35-36-37-38-39-60-66-67"

Syntax extension to define first class values representing record fields, to get and set record fields, iterate and fold over all fields of a record and create new record values.

Piqi is a multi-format data serialization system for OCaml. It provides a uniform interface for serializing OCaml data structures to JSON, XML and Protocol Buffers formats.

This package contains assert-like extension nodes that raise useful errors on failure.

Generation of binary serialization and deserialization functions from type definitions.

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

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.

GSL-OCaml is an interface to the GNU scientific library (GSL) for the OCaml language.

Dune is a build system for OCaml. It provides a consistent experience and takes care of the low-level details of OCaml compilation. Descriptions of projects, libraries and executables are provided in dune files following an s-expression syntax.

Mccs (Multi Criteria CUDF Solver) is a CUDF problem solver. Mccs take as input a CUDF problem and computes the best solution according to a set of criteria. It relies on a Integer Programming solver or a Pseudo Boolean solver to achieve its task. Mccs can use a wide set of underlying solvers like Cplex, Gurobi, Lpsolver, Glpk, CbC, SCIP or WBO.